Jump to Recipe Print RecipeAs I strolled through the farmers’ market, the rich aroma of caramelized onions wafted through the air, instantly igniting memories of cozy family dinners. This inspired me to create my French Onion Broccoli Cheese Casserole—a dish that not only warms the heart but also celebrates the wholesome goodness of vegetables and cheese. With its creamy cheddar and nutty Gruyère, this casserole is a vegetarian delight that offers a comforting escape from the hustle of everyday life. Not only is it easy to whip up for a busy weeknight, but it’s also destined to become the star of holiday gatherings and potlucks. Ready to dive into this glorious cheesy creation? Let’s get cooking! Why is This Casserole a Must-Try? Comforting and indulgent, this French Onion Broccoli Cheese Casserole is the perfect dish for any occasion! Nutritious broccoli pairs amazingly with creamy cheeses to satisfy your cravings for comfort food. Quick and easy to prepare, it’s ideal for busy weeknights or last-minute gatherings. Versatile enough to adjust ingredients based on what’s in your fridge, you can even swap in sautéed mushrooms if you desire. And, let’s not forget: this dish makes a crowd-pleasing centerpiece at potlucks or family dinners. Serve it alongside Grilled Chicken Broccoli for a balanced meal that everyone will love! French Onion Broccoli Cheese Casserole Ingredients For the Casserole Broccoli – The main vegetable component, providing nutrition and texture; be sure to drain it well post-steaming to avoid excess moisture. Cheddar Cheese – Adds a creamy, rich flavor—sharp cheddar works best for depth. Gruyère Cheese – Brings a delightful nuttiness that complements the cheddar; could substitute with Swiss or Monterey Jack. Butter – Essential for enriching the dish and caramelizing the onions. Onions – When caramelized, they contribute sweetness and depth to the casserole; cook them on low heat with a bit of sugar and salt for 15-20 minutes. Garlic Powder – Enhances overall flavor; adjust the amount based on your preference. Black Pepper – Adds a slight kick; feel free to adjust to taste. For the Topping Fried Onions – Adds a satisfying crunch on top; for a lighter alternative, substitute with panko breadcrumbs tossed in melted butter or crispy shallots. For the Broth Beef Broth – Forms the flavorful base for the casserole; use vegetable broth for a vegetarian-friendly option. With this lineup of ingredients, you’re well on your way to crafting a delicious French Onion Broccoli Cheese Casserole that will leave everyone asking for seconds! Step‑by‑Step Instructions for French Onion Broccoli Cheese Casserole Step 1: Prepare Broccoli Begin by steaming or blanching the fresh broccoli florets until they are tender, which usually takes about 3–5 minutes. After steaming, drain the broccoli well to remove any excess moisture; this step is crucial for a successful French Onion Broccoli Cheese Casserole. Set the broccoli aside while you work on the caramelized onions. Step 2: Caramelize Onions In a large skillet over low heat, melt 2 tablespoons of butter. Add thinly sliced onions along with a pinch of sugar and salt, and sauté them gently for 15–20 minutes. Stir occasionally as they cook, allowing them to become golden brown and fragrant. This caramelization brings out their natural sweetness, creating a delicious base for your casserole. Step 3: Mix Ingredients In a large mixing bowl, combine the drained broccoli with the melted butter, both cheddar and Gruyère cheeses, beef broth, garlic powder, and black pepper. Stir the mixture thoroughly until all ingredients are evenly coated and the cheese begins to melt slightly. This rich blend will serve as the heart of your French Onion Broccoli Cheese Casserole. Step 4: Assemble Casserole Preheat your oven to 350°F (175°C). Spread the broccoli and cheese mixture uniformly in a greased baking dish, ensuring even coverage. Top the mixture with crispy fried onions or panko breadcrumbs tossed in melted butter if you prefer a lighter option. This will create a delightful crunch on top of your casserole. Step 5: Bake Place the assembled casserole in the preheated oven and bake for 30–40 minutes, or until the cheese is bubbly and the top is golden brown. Keep an eye on it as it cooks, enjoying the delicious aroma that fills your kitchen. This will culminate in a warm, cheesy French Onion Broccoli Cheese Casserole that’s perfect for any occasion. Step 6: Serve Once baked, remove the casserole from the oven and allow it to cool slightly for about 5–10 minutes before serving. This brief resting period helps to enhance the flavors and makes it easier to serve. Delight in each bite of your comforting French Onion Broccoli Cheese Casserole as you share it with family and friends! Helpful Tricks for French Onion Broccoli Cheese Casserole Broccoli Prep: Drain thoroughly after steaming to prevent a soggy casserole; excess moisture can ruin texture and flavor. Onion Caramelization: Cook onions slowly on low heat; rushing this step will lead to burnt bits instead of sweet, golden deliciousness. Cheese Choice: Opt for sharp cheddar for added depth; mixing different cheeses like Gruyère can elevate the casserole’s flavor profile. Crunchy Topping: If using panko breadcrumbs, ensure they are mixed with melted butter; this will create a delightful crunch that’s irresistible. Make-Ahead Strategy: Assemble the casserole without the topping and refrigerate for up to 24 hours; add the fried onions just before baking for best results. What to Serve with French Onion Broccoli Cheese Casserole A cozy casserole like this one invites vibrant sides that enhance its comforting embrace. Garlic Bread: Perfect for soaking up cheesy goodness, crispy garlic bread adds a delightful crunch and savory kick to each meal. Mixed Green Salad: A light, fresh salad with tangy vinaigrette balances the richness of the casserole, providing refreshing crispness with every bite. Roasted Vegetables: Seasonal roasted veggies bring an earthy element that complements the flavors of the casserole, adding both color and nutrition to your plate. Quinoa Pilaf: This nutty grain option offers a healthy twist and adds texture. The subtle flavor pairs beautifully with the rich cheese and broccoli. Creamy Coleslaw: The crunch and coolness of creamy coleslaw is a delightful contrast that enhances the overall dining experience, making your meal feel beautifully layered. Red Wine: A glass of silky red wine acts as a wonderful companion to the casserole, elevating the complexity of flavors and making for a cozy dinner time. French Onion Broccoli Cheese Casserole Variations Feel free to get creative with your French Onion Broccoli Cheese Casserole! Each twist brings a unique flavor and experience to this cozy dish. Mushroom Boost: Substitute sautéed mushrooms for half the broccoli to add an earthy, savory richness that complements the cheese beautifully. Mushrooms not only add depth but also contribute a wonderful umami flavor that elevates the casserole experience. Vegan Version: Swap in dairy-free cheese and use vegetable broth instead of beef broth for a completely vegan-friendly casserole. With the right cheese alternative, you won’t miss the dairy in this hearty dish—it’s all about the flavors you crave! Herb Infusion: Mix in fresh herbs such as thyme or rosemary into the cheese mixture for an aromatic twist that enhances the overall flavor. Herbs can transform the dish into something special, creating a deliciously fragrant dinner that will impress your guests. Spice It Up: Add a pinch of red pepper flakes or diced jalapeños for a spicy kick that livens up the comforting flavors of the casserole. This spicy variation is perfect for those who love a bit of heat alongside creamy cheeses and tender broccoli! Nutty Crunch: Toss in some toasted walnuts or pecans to the topping mix for extra texture and nutty flavor. The combination of crunchy nuts with the crispy topping creates a delightful contrast in each bite. Potato Layer: Layer thinly sliced potatoes beneath the broccoli and cheese for a more robust casserole that’s hearty enough to be a main dish. This variation is a satisfying twist, making your casserole more filling and comfortingly decadent! Gourmet Cheese Blend: Experiment with different cheese combinations like fontina or goat cheese along with cheddar and Gruyère for a gourmet touch. Mixing cheese varieties not only enhances flavor but also adds an intriguing creaminess that you’ll absolutely love. Casserole Medley: Incorporate other veggies like spinach or bell peppers to amp up the nutritional content and create a colorful dish. Additional veggies not only boost the healthiness of your casserole but can also create a stunning and playful healthful presentation! Feel free to explore these variations and find a perfect match for your tastes! For an additional comforting touch, consider pairing it with a simple salad or your favorite roasted meats, like the deliciously-seasoned French Chicken Casserole. Enjoy creating your unique spin on this beloved casserole! Storage Tips for French Onion Broccoli Cheese Casserole Room Temperature: Allow the casserole to cool completely before storing; it should not be left out for more than 2 hours to ensure safety. Fridge: Store any leftovers in an airtight container in the refrigerator for up to 4 days. Ensure it’s sealed tightly to keep flavors fresh and avoid moisture. Freezer: If you want to freeze the casserole, wrap it tightly in plastic wrap and then in aluminum foil. It can be stored in the freezer for up to 3 months. Reheating: To reheat, place in a preheated oven at 350°F (175°C) for about 20-25 minutes, covered, until heated through. This will help restore the creamy texture of your French Onion Broccoli Cheese Casserole. Make Ahead Options Preparing the French Onion Broccoli Cheese Casserole ahead of time is a brilliant way to save precious moments on busy weeknights! You can assemble the casserole without the fried onions and refrigerate it for up to 24 hours. Just cover it tightly with plastic wrap or foil to prevent moisture loss and maintain its freshness. When you’re ready to bake, simply add the crispy fried onions on top and pop it into a preheated oven. This way, your casserole will be just as delicious and comforting as if you had made it freshly that day, allowing you to focus on enjoying the meal with your loved ones! French Onion Broccoli Cheese Casserole Recipe FAQs What type of broccoli should I use for the casserole? Absolutely! Fresh broccoli florets are ideal for this French Onion Broccoli Cheese Casserole. Look for bright green heads without dark spots or yellowing. If using frozen broccoli, ensure it’s thawed and well-drained to prevent excess moisture, which can make the casserole soggy. How should I store leftovers from the casserole? Very! Once the casserole has cooled completely, transfer any leftovers to an airtight container. It will stay fresh in the refrigerator for up to 4 days. Make sure to seal it tightly to lock in flavors and avoid moisture. Can I freeze the French Onion Broccoli Cheese Casserole? Definitely! To freeze, wrap the casserole tightly with plastic wrap, followed by aluminum foil to prevent freezer burn. This dish can be stored in the freezer for up to 3 months. When you’re ready to enjoy it again, thaw it in the fridge overnight and then reheat in a preheated oven at 350°F (175°C) until heated through. What should I do if my casserole is too watery? If you notice excess moisture in your casserole, it’s essential to ensure that the broccoli is well-drained before mixing. Additionally, you can thicken the mixture by adding a tablespoon of flour or cornstarch before baking. If it’s already cooked, you may want to remove some excess liquid carefully before serving. Is this casserole suitable for vegetarians? Yes! This French Onion Broccoli Cheese Casserole is a vegetarian-friendly dish as long as you use vegetable broth instead of beef broth. It remains indulgent with the cheesy goodness and can be enjoyed by everyone, whether they follow a vegetarian diet or not. Can I make the casserole ahead of time? Of course! For a make-ahead option, assemble the casserole minus the topping up to 24 hours in advance. Cover it tightly and store it in the refrigerator. When you’re ready to bake, add the crispy fried onions just before popping it in the oven for a deliciously fresh and crunchy topping! French Onion Broccoli Cheese Casserole: Comfort in Every Bite A delicious French Onion Broccoli Cheese Casserole that combines caramelized onions, tender broccoli, and creamy cheeses for a comforting dish. Print Recipe Pin Recipe Prep Time 15 minutes minsCook Time 40 minutes minsCooling Time 10 minutes minsTotal Time 1 hour hr 5 minutes mins Servings: 6 servingsCourse: DinnerCuisine: FrenchCalories: 350 Ingredients Equipment Method Nutrition Notes Ingredients 1x2x3x? For the Casserole4 cups Broccoli Be sure to drain it well post-steaming.2 cups Cheddar Cheese Sharp cheddar works best.1 cup Gruyère Cheese Could substitute with Swiss or Monterey Jack.2 tablespoons Butter For enriching the dish and caramelizing the onions.2 cups Onions Cook them on low heat for 15-20 minutes.1 teaspoon Garlic Powder Adjust based on your preference.1/2 teaspoon Black Pepper Adjust to taste.For the Topping1 cup Fried Onions For a satisfying crunch on top.For the Broth1 cup Beef Broth Use vegetable broth for a vegetarian option. Equipment Large skilletbaking dishMixing Bowl Method Step-by-Step InstructionsStep 1: Prepare Broccoli - Steam or blanch the broccoli florets for about 3-5 minutes, then drain well.Step 2: Caramelize Onions - Melt 2 tablespoons of butter in a skillet over low heat, add onions, sugar, and salt, and sauté for 15-20 minutes.Step 3: Mix Ingredients - In a mixing bowl, combine the broccoli with the melted butter, cheddar and Gruyère cheeses, beef broth, garlic powder, and black pepper.Step 4: Assemble Casserole - Preheat oven to 350°F (175°C), spread the mixture in a greased baking dish and top with fried onions.Step 5: Bake - Bake for 30-40 minutes until cheese is bubbly and top is golden brown.Step 6: Serve - Allow the casserole to cool for 5-10 minutes before serving. Nutrition Serving: 1casserole servingCalories: 350kcalCarbohydrates: 15gProtein: 12gFat: 24gSaturated Fat: 14gPolyunsaturated Fat: 1gMonounsaturated Fat: 10gTrans Fat: 1gCholesterol: 55mgSodium: 700mgPotassium: 400mgFiber: 3gSugar: 3gVitamin A: 20IUVitamin C: 90mgCalcium: 40mgIron: 10mg NotesThoroughly drain broccoli after steaming to avoid a soggy casserole. Caramelize onions slowly for the best flavor. Use sharp cheddar and mix cheeses for depth in flavor. Tried this recipe?Let us know how it was!
