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Summer Squash Casserole

A delicious creamy and cheesy side dish with a crunch topping for any occasion or potluck.
Course: 9 x 13 casserole, casserole, catherines plates, Side Dish, squash, vegetable, yellow squash
Cuisine: American
Author: Catherine's Plates

Equipment

  • cutting board & sharp knife
  • measuring cups & spoons
  • large mixing bowl
  • large deep skillet
  • 9 x 13 baking dish
  • zip loc bag

Ingredients

  • 4 medium yellow squash, cut into 1/4 - 1/2 inch rounds
  • 4 TBS butter
  • 1 medium yellow onion, chopped
  • 1/4 tsp each salt, black pepper, garlic powder, onion powder

Creamy Mixture

  • 2 large eggs, beaten
  • 1 cup sour cream
  • 1/3 cup mayonnaise
  • 1 cup cheddar cheese, shredded (DIVIDED)
  • 1 cup swiss cheese, shredded (DIVIDED)
  • 1/2 tsp each salt, black pepper, garlic powder, onion powder

Topping

  • 4 TBS butter, melted
  • 2 sleeves ritz crackers, crushed into big pieces

Instructions

  • Preheat oven to 350 degrees. Butter a 9 x 13 baking dish and set aside.
  • In a large skillet melt 4 TBS butter over medium high heat. Cut squash into 1/4 - 1/2 inch rounds and place into skillet. Add in chopped onion. Season with a 1/4 tsp each of salt, black pepper, garlic powder, and onion powder.
  • Cook squash and onion for 6-7 minutes until partially softened. They will cook the rest of the way once in the oven later in recipe. Turn off heat.
  • In a large mixing bowl whisk together beaten eggs, sour cream, mayonnaise, 1/2 cup cheddar cheese, and 1/2 cup swiss cheese. Season with 1/2 tsp each salt, black pepper, garlic powder, and onion powder.
  • Fold in cooked squash and onion into the sour cream/mayonnaise mixture until evenly coated. Pour mixture into prepared baking dish evenly. Top with remaining 1/2 cup cheddar cheese and 1/2 cup swiss cheese.
  • In a small bowl mix together melted butter and ritz cracker crumbs until well coated. Sprinkle mixture all over casserole in an even layer.
  • Bake in preheated oven for 20-25 minutes until cracker topping is golden brown and cheese has melted. Let cool for 5 minutes before serving.