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French Onion Broccoli Cheese Casserole Recipe

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 4.1 from 286 reviews
  • Author: admin
  • Prep Time: 15 minutes
  • Cook Time: 30 minutes
  • Total Time: 45 minutes
  • Yield: 6 to 8 servings
  • Category: Casserole
  • Method: Baking
  • Cuisine: American
  • Diet: Vegetarian

Description

A comforting and cheesy casserole featuring broccoli and a flavorful French onion soup base, topped with crispy fried onions for a delightful crunch. This easy-to-make dish is perfect as a side or a vegetarian main course, combining tender broccoli with creamy cheese and savory herbs baked to bubbly perfection.


Ingredients

Scale

Vegetables

  • 4 cups fresh or frozen broccoli florets (steamed or blanched)

Casserole Mixture

  • 1 (10.5 oz) can condensed French onion soup
  • ½ cup sour cream
  • 1 cup shredded sharp cheddar cheese
  • 1 tablespoon all-purpose flour (optional)
  • 1¼ teaspoons dried thyme (divided as ½ tsp optional for casserole and additional flavor)
  • ¼ teaspoon garlic powder
  • ¼ teaspoon black pepper
  • Pinch of salt, to taste

Topping

  • 1½ cups crispy fried onions (divided: 1 cup in casserole and ½ cup for topping)


Instructions

  1. Preheat and Prepare: Preheat your oven to 350°F (175°C) and grease a baking dish to prevent sticking and ensure easy cleanup.
  2. Prepare Broccoli: Steam fresh broccoli florets until tender but still firm, or if using frozen broccoli, thaw and thoroughly drain any excess water to avoid sogginess in the casserole.
  3. Mix Ingredients: In a large bowl, combine the condensed French onion soup, sour cream, garlic powder, black pepper, dried thyme, and salt. Stir in the shredded sharp cheddar cheese and 1 cup of the crispy fried onions. Optionally add 1 tablespoon of all-purpose flour to help thicken the mixture.
  4. Combine with Broccoli: Gently fold the steamed or thawed broccoli into the mixture, ensuring it is well coated without breaking up the florets.
  5. Transfer and Bake: Pour the broccoli mixture into the greased baking dish and spread evenly. Bake uncovered for 20 minutes to allow the casserole to heat through and cheese to melt.
  6. Add Topping and Finish Baking: Remove from oven, sprinkle the remaining ½ cup of crispy fried onions on top, then bake for an additional 5 to 10 minutes until the topping is golden brown and bubbly.
  7. Rest and Serve: Let the casserole sit for 5 minutes after baking to set slightly and to enhance flavors before serving.

Notes

  • Steaming fresh broccoli preserves nutrients and texture better than boiling, ensuring a tender yet firm bite.
  • Using crispy fried onions adds a delicious crunchy contrast; do not omit the topping for best texture.
  • The optional flour helps to thicken the casserole filling for a creamier consistency, especially if the soup is thinner.
  • This casserole can be made ahead and refrigerated before baking; add extra baking time if cooking from cold.
  • For a gluten-free version, use gluten-free fried onions and flour substitute.
  • Try mixing in a pinch of nutmeg for extra warmth and depth in flavor.