If you’re searching for a comforting yet light side dish, this Summer Squash Casserole with Ritz Crackers is exactly what you need. It’s creamy, cheesy, and topped with a buttery, golden cracker crust that adds the perfect crunch to every bite.
This dish highlights the natural sweetness of fresh summer squash while combining it with rich, savory flavors. Whether you’re hosting a backyard BBQ, planning a family dinner, or just looking for a new way to enjoy squash, this casserole is guaranteed to impress.

☀️ Why You’ll Love This Recipe
- Light yet comforting – perfect for warm-weather meals
- Creamy and cheesy with a crispy topping
- Easy to prepare with simple ingredients
- Great for gatherings – always a crowd favorite
- Versatile – works as a side or light main dish
🛒 Ingredients You’ll Need
- 4 cups yellow summer squash, sliced
- ½ cup onion, chopped
- 1 cup shredded cheddar cheese
- ½ cup mayonnaise
- ½ cup sour cream
- 2 eggs, beaten
- 1 sleeve Ritz crackers, crushed
- ¼ cup melted butter
- 1 tsp salt
- ½ tsp black pepper
- ½ tsp garlic powder
- ½ tsp onion powder
🍳 Kitchen Tools
- Large skillet
- Mixing bowls
- Baking dish
- Knife & cutting board
- Wooden spoon
- Measuring cups & spoons
👩🍳 How to Make Summer Squash Casserole
1. Preheat the Oven
Set your oven to 350°F (175°C) and lightly grease a baking dish.
2. Cook the Squash & Onion
In a large skillet over medium heat, sauté the sliced squash and onion for about 10 minutes, until tender.
Remove from heat and let cool slightly.
3. Prepare the Filling
In a large bowl, combine:
- Cooked squash and onion
- Cheddar cheese
- Mayonnaise
- Sour cream
- Beaten eggs
Season with salt, pepper, garlic powder, and onion powder. Mix until well combined.
4. Assemble the Casserole
Transfer the mixture into the prepared baking dish and spread evenly.
In a separate bowl, mix crushed Ritz crackers with melted butter.
Sprinkle evenly over the top.
5. Bake
Bake for 25–30 minutes, until the top is golden brown and the casserole is bubbling around the edges.
6. Serve
Let cool slightly before serving. Enjoy warm as a side dish or light main course.
🔥 Tips for Best Results
- Use fresh, tender squash for the best flavor
- Don’t overcook squash—it should be soft but not mushy
- For extra crunch, add a bit more cracker topping
- Let the casserole rest a few minutes before serving
🍽️ Serving Ideas
Pair this casserole with:
- Grilled chicken or steak
- BBQ dishes
- Fresh green salad
- Roasted vegetables
❄️ Storage Tips
- Fridge: Store leftovers in an airtight container for up to 3 days
- Reheat: Warm in oven or microwave until heated through
💛 Final Thoughts
This Summer Squash Casserole with Ritz Crackers is the perfect balance of creamy, cheesy comfort and light, fresh flavor. With its crispy topping and rich filling, it’s a dish that turns simple ingredients into something truly special.
