Cheesy Broccoli and Cauliflower Bake delivers creamy baked comfort, three-cheese richness, and family-friendly vegetable appeal. Broccoli and cauliflower florets combine with Gruyère, cheddar, and Parmesan in this baked vegetable casserole recipe using a creamy roux-based cheese sauce and oven finish for a golden topping.
2 ½poundsbroccoli and cauliflower floretsuse a mix or adjust to preference
6ouncesGruyere cheesegrated (about 1 ½ cups)
4ouncessharp white cheddar cheesegrated (about 1 cup)
2ouncesParmesan cheesegrated (about ½ cup)
3clovesgarlicminced
3tablespoonsunsalted butter
3tablespoonsall-purpose flour
2cupsheavy cream
1teaspoonHerbs de Provence
Pinchof nutmeg
2tablespoonsbreadcrumbsoptional, for a crispy topping
paprikafor sprinkling (optional for color)
salt and pepperto taste
Instructions
Preheat the oven to 375°F (190°C). Grease an 8x8-inch baking dish with a bit of butter or cooking spray.
Bring a pot of water to a boil. Add the broccoli and cauliflower florets, and blanch for 3-4 minutes until just tender but still crisp. Drain well and set aside.
In a medium saucepan, melt the butter over medium heat. Add the minced garlic and cook for about 1 minute until fragrant.
Sprinkle in the flour, stirring constantly to create a roux. Continue stirring for about 1-2 minutes until the flour is golden.
Gradually whisk in the heavy cream, ensuring there are no lumps. Cook for 3-5 minutes until the sauce thickens slightly.
Add the Gruyere, white cheddar, and Parmesan cheeses to the sauce, reserving a small handful of each for the topping. Stir until melted and smooth.
Season with Herbs de Provence, salt, pepper, and a pinch of nutmeg. Taste and adjust seasoning as needed.
Arrange the blanched broccoli and cauliflower florets evenly in the prepared 8x8-inch baking dish.
Pour the cheese sauce over the vegetables for even coating. Sprinkle the reserved cheeses over the top of the casserole. Add the 2 tablespoons of breadcrumbs for a crispy topping, if desired. Lightly dust with paprika for color.
Bake in the preheated oven for 20-25 minutes, or until the top is golden and bubbly, and the vegetables are tender when pierced with a fork.
Remove from the oven and let the casserole sit for 5 minutes to set.
Notes
Cooking NotesBlanching the broccoli and cauliflower first ensures the vegetables become tender without overcooking in the oven. Preparing the cheese sauce with a quick roux helps it thicken and coat the vegetables evenly. Letting the casserole rest for a few minutes after baking allows the sauce to set.Tips for Best Results
Drain the vegetables well after blanching so the casserole doesn’t become watery.
Whisk the cream slowly into the roux to keep the sauce smooth.
Reserve a small amount of cheese for the top to create a golden crust.
Let the bake sit for a few minutes before serving so the sauce thickens.
How to Know It’s ReadyThe casserole should be bubbling around the edges with a golden cheese topping. The vegetables should be tender when pierced with a fork.