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Delicious French Onion Broccoli Cheese Casserole topped with crispy fried onions.

French Onion Broccoli Cheese Casserole

A comforting and cheesy casserole made with broccoli, French onion soup, and cheddar cheese, perfect for busy weeknights or potlucks.
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Prep Time 10 minutes
Cook Time 30 minutes
Total Time 40 minutes
Servings: 8 servings
Course: Dinner, Main Course
Cuisine: American, Comfort Food
Calories: 400

Ingredients
  

Main ingredients
  • 5-6 cups fresh broccoli florets or frozen broccoli If using frozen broccoli, thaw and squeeze out extra water.
  • 1 can (10.5 oz) French onion soup Canned is acceptable.
  • 1 small onion, thinly sliced Optional but recommended for extra flavor.
  • 2 cups shredded cheddar cheese Sharp is best.
  • 4 oz cream cheese, softened
  • 1 cup sour cream or plain Greek yogurt
  • 2 cloves garlic, minced Or 1 teaspoon garlic powder.
  • to taste salt and pepper
  • 1 cup crispy fried onions or buttered breadcrumbs For the crunchy topping.
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Instructions
 

Preparation
  1. Preheat your oven to 375°F (190°C) and lightly grease a 9x13 baking dish.
  2. Cook the broccoli just until it's bright green and barely tender. For fresh broccoli, steam it for 4 to 5 minutes. For frozen, microwave it and drain well.
  3. In a large bowl, stir together the French onion soup, cream cheese, sour cream, garlic, and a good pinch of pepper. Microwave the cream cheese if it’s hard to mix.
  4. Fold in the broccoli and most of the cheddar cheese, saving a small handful for the top.
  5. Spread the mixture into the prepared dish, sprinkle the remaining cheese on top, and then add the crispy fried onions.
  6. Bake for about 25 to 30 minutes, until it’s bubbly around the edges and the top is golden.
  7. Let it sit for 5 to 10 minutes before scooping to allow it to set.
Slow Cooker Option
  1. Lightly grease the slow cooker insert.
  2. Steam or microwave the broccoli first.
  3. Mix the French onion soup, cream cheese, sour cream, garlic, and most of the cheddar in a bowl. Fold in the broccoli.
  4. Cook on LOW for 2 to 3 hours, until hot and melty. Add remaining cheese for the last 15 minutes.
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Notes

This casserole can be prepared in advance and stored in the fridge for up to 24 hours or frozen for up to 2 months. For best results when freezing, do not add the crunchy topping until ready to bake. Frozen broccoli can yield a softer texture, so fresh is preferred for freezing.