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Cheesy cauliflower and broccoli casserole recipe

Cauliflower and Broccoli Casserole Recipe

Prep Time 20 mins
Cook Time 25 mins
Total Time 45 mins
Servings 8 -10 servings
Calories 237 kcal

what you'll need

  • 2 heads of cauliflower broken into florets
  • 1 head of broccoli broken into florets
  • 3 Tbsp unsalted butter divided
  • 1/4 cup breadcrumbs or panko
  • 1/2 yellow onion diced
  • 1 clove garlic minced
  • 2 Tbsp all-purpose flour
  • 1/2 tsp red pepper flakes optional
  • 2 cups sharp cheddar cheese shredded
  • 1/2 cup Parmesan cheese grated
  • 1 tsp salt
  • 1/2 tsp pepper

let's do it

  • Preheat oven to 400 degrees and generously butter a 9" x 13" casserole dish. Set aside.
  • Fill a large pot halfway with water and bring to a boil over high heat. Cook cauliflower and broccoli florets for 6 minutes.
  • In a large non-stick skillet, melt 1 Tbsp butter. Add the breadcrumbs and toast until fragrant and browned. Set aside and wipe out the skillet with a paper towel.
  • Remove cauliflower and broccoli florets from heat, strain then place back in the empty pot. Return the pot to the heat and toss the veggies for 2–3 minutes to release steam and dry them out. Remove from the heat and set aside.
  • In the large clean skillet, melt 2 Tbsp butter. Sauté onion and garlic in the butter over medium heat for about 2 minutes or until onion is translucent. Add flour and red pepper flakes, whisk to combine then cook for 1 minute. Slowly whisk in milk until flour is dissolved. Cook for 2 minutes until slightly thickened.
  • Stir in cheeses until melted then season with salt and pepper to taste. Pour the cheese sauce over the cauliflower and broccoli florets and stir to combine. Sprinkle with 1 tsp of salt and ½ tsp pepper.
  • Pour the cheesy cauliflower mixture into the prepared 9" x 13" baking dish. Sprinkle with toasted breadcrumbs and bake 20–25 minutes or until hot and bubbly. Cool for at least 5 minutes before serving.

One Last Thing

Make a complete meal out of this side dish recipe by adding a pound of sliced pan-seared chicken!


Calories: 237kcalCarbohydrates: 14gProtein: 14gFat: 15gSaturated Fat: 9gPolyunsaturated Fat: 0.2gMonounsaturated Fat: 3gCholesterol: 40mgSodium: 633mgPotassium: 481mgFiber: 5gSugar: 4g
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