Broccoli Cheddar Cornflake Casserole (Printable)

Cheesy broccoli casserole paired with crunchy cornflakes. A family-friendly, comforting vegetarian side or main.

# What You'll Need:

→ Vegetables

01 - 6 cups fresh broccoli florets (approximately 2 large heads)
02 - 1 small yellow onion, finely chopped
03 - 2 cloves garlic, minced

→ Dairy

04 - 2 cups sharp cheddar cheese, shredded
05 - 1 cup sour cream
06 - 1/2 cup whole milk
07 - 2 tablespoons unsalted butter
08 - 2 tablespoons unsalted butter, for topping

→ Pantry

09 - 1 can (10.5 ounces) condensed cream of mushroom soup
10 - 1 teaspoon Dijon mustard
11 - 1/2 teaspoon salt
12 - 1/4 teaspoon freshly ground black pepper

→ Topping

13 - 2 cups cornflakes, lightly crushed
14 - 2 tablespoons unsalted butter, melted

# Method:

01 - Preheat oven to 350°F. Coat a 9x13-inch baking dish with nonstick spray or lightly grease with butter.
02 - Bring a large pot of salted water to a boil. Add broccoli florets and blanch for 2 to 3 minutes, until bright green and just tender. Drain thoroughly using a colander and set aside.
03 - In a large skillet over medium heat, melt 2 tablespoons unsalted butter. Sauté chopped onion until translucent, about 3 minutes. Add minced garlic and cook for 1 minute more.
04 - In a large mixing bowl, combine sautéed onion and garlic, blanched broccoli, shredded cheddar cheese, sour cream, whole milk, condensed cream of mushroom soup, Dijon mustard, salt, and pepper. Mix until uniformly blended.
05 - Transfer broccoli mixture evenly into the prepared baking dish, spreading the top with a spatula.
06 - In a small bowl, mix crushed cornflakes with 2 tablespoons melted unsalted butter. Sprinkle evenly over the surface of the casserole.
07 - Place baking dish in the oven and bake for 30 to 35 minutes, until the filling is bubbly and topping is golden brown.
08 - Allow casserole to rest for 5 minutes before serving to set the filling.

# Expert Advice:

01 -
  • Simple prep and easy cleanup in under an hour
  • Cozy, melty cheddar flavor in every bite
  • Turns humble broccoli into a family favorite
  • Crowd pleaser for vegetarians and omnivores alike
02 -
  • This casserole is high in protein and fiber thanks to all that broccoli and cheese
  • The cornflake topping stays crisp even after reheating
  • You can assemble this ahead then bake right before mealtime
03 -
  • The trick to the best texture is blanching not boiling the broccoli too long.
  • Make sure your cheddar is freshly shredded and not prebagged for better melt.
  • Crush the cornflakes just enough for crunch but leave some larger pieces for extra crisp topping.

Return