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Cheesy Broccoli Casserole

Cheesy broccoli casserole with creamy cheddar sauce and a buttery Ritz cracker crumb topping. Broccoli is steamed crisp-tender and baked until bubbly and golden on top.
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Prep Time 15 minutes
Cook Time 35 minutes
Total Time 50 minutes
Servings: 8 servings
Course: Side Dish
Cuisine: American
Calories: 420
Ingredients Equipment Method Notes

Ingredients
  

Broccoli florets
  • 2 lb broccoli florets
Cream of mushroom soup
  • 1 can (10.5 oz) cream of mushroom soup
Mayonnaise
  • 1 cup mayonnaise
Eggs
  • 2 large eggs
Onion
  • 1 small small onion, finely diced
Sharp cheddar cheese
  • 2 cup shredded sharp cheddar, divided
Salt
  • 0.5 tsp salt
Black pepper
  • 0.25 tsp black pepper
Ritz crackers
  • 1 sleeve Ritz crackers, crushed
Butter
  • 3 tbsp butter, melted

Equipment

  • 1 sheet pan

Method
 

Prep and preheat
  1. Preheat the oven to 350F and grease a 9x13-inch baking dish. Visual cue: the baking dish should be lightly coated so the topping releases easily.
Steam broccoli
  1. Steam the broccoli florets for 4-5 minutes until crisp-tender, then drain well. Visual cue: bright green florets should still have a slight bite.
Make the creamy filling
  1. Mix cream of mushroom soup, mayonnaise, eggs, finely diced onion, 1 1/2 cups cheddar, salt, and black pepper until smooth and combined. Visual cue: the mixture should look creamy and evenly speckled with onion.
  2. Fold the drained broccoli into the mixture and spread it into the greased baking dish. Visual cue: broccoli should be evenly distributed with no large dry gaps.
  3. Sprinkle the remaining cheddar over the top in an even layer. Visual cue: the surface should be fully covered for a melty, cheesy finish.
Add topping and bake
  1. Toss the crushed Ritz crackers with the melted butter. Visual cue: the crumbs should look evenly coated and slightly sandy.
  2. Sprinkle the buttered cracker crumbs over the casserole. Visual cue: you should see a uniform golden layer across the surface.
  3. Bake at 350F for 30-35 minutes until bubbly and golden. Visual cue: edges should bubble and the topping should look toasted.

Notes

For the cleanest texture, steam the broccoli only until crisp-tender, then drain thoroughly so the casserole doesn’t loosen. Store leftovers covered in the refrigerator for up to 3 days; freeze is not recommended due to the mayonnaise-based sauce. Dietary swap: use reduced-fat cheddar for a lighter version while keeping the same creamy bake.