Cheesy Yellow Squash Casserole Recipe

If you’re on the lookout for a comforting, delicious side dish that just about everyone raves over, you’ve got to try this Cheesy Yellow Squash Casserole Recipe. It’s one of those recipes that feels like a warm hug from the oven — creamy, cheesy, and topped with a buttery, crispy goodness that’s hard to resist. Whether it’s for a weeknight dinner or a holiday gathering, this casserole never fails to impress. I can’t wait to share all my tips so you’ll nail it perfectly every time!

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Ingredients You’ll Need

Each ingredient in this Cheesy Yellow Squash Casserole Recipe plays a key role in making it taste just right. From tender squash and sweet onions to the melty cheddar cheese and buttery Ritz cracker topping, everything works together for that dreamy texture and flavor.

• Butter: I use real butter here because it adds richness and helps everything meld together beautifully.
• Yellow squash: Fresh and thinly sliced is best — it cooks quickly and maintains just enough texture.
• Onion: Adds a subtle sweetness that complements the squash perfectly.
• Eggs: They bind the mixture, making the casserole nice and firm when baked.
• Grated cheddar cheese: The star of the show for that creamy, sharp flavor; sharp cheddar works wonderfully.
• Milk: Helps keep the casserole moist but not runny.
• Cayenne pepper (optional): Just a pinch adds a gentle kick, but feel free to skip if you want more mellow flavors.
• Kosher salt and black pepper: Essential for seasoning and balancing the dish.
• Ritz crackers: I love the buttery, crisp topping they create — just crush ’em up and sprinkle generously.

Variations

One thing I love about this Cheesy Yellow Squash Casserole Recipe is how easy it is to make your own. Over time, I’ve mixed in different cheeses or swapped out crackers for breadcrumbs — feel free to get creative based on what you have or your dietary needs.

• Cheese Variety: I sometimes swap half the cheddar for mozzarella or pepper jack for a little extra gooey stretch and kick.
• Gluten-Free Topping: Using crushed gluten-free crackers or panko breadcrumbs works great if you want to avoid gluten.
• Add a Crunch: Toasted pecans or almonds sprinkled on top before baking add lovely texture and nuttiness.
• Spice it Up: If you enjoy a bit more heat, mix in a dash of smoked paprika or a bit more cayenne — I promise it wakes up the flavors nicely.

How to Make Cheesy Yellow Squash Casserole Recipe

Step 1: Sauté Your Squash and Onions to Perfection

Start by melting 2 tablespoons of butter in a medium skillet over medium-low heat. Add your sliced yellow squash and chopped onions, then cook gently until everything’s tender and fragrant — usually about 8-10 minutes. Stir occasionally so nothing sticks or burns. This step softens the veggies and brings out their natural sweetness, which really makes the casserole shine.

Step 2: Mix Your Cheesy, Creamy Base

In a big bowl, lightly whisk the eggs. Then add the grated cheddar cheese and milk, stirring until everything’s smooth and combined. Next, fold in your cooked squash and onions. Melt the remaining 2 tablespoons of butter in that same skillet and stir it into the mixture along with the cayenne pepper (if using), kosher salt, and black pepper. This buttery goodness adds extra flavor and keeps the casserole nice and moist.

Step 3: Assemble and Bake

Spray a 9×13 baking dish with cooking spray so your casserole doesn’t stick. Pour in your squash mixture evenly, then sprinkle the crushed Ritz crackers right on top — this will toast up beautifully in the oven. Bake in a preheated 350º F oven for about 45 minutes, until the top is lightly browned and the casserole hardly jiggles when you gently shake the dish. Trust me, that jiggle test is a good way to know it’s set without overbaking.

Step 4: Let it Rest Before Serving

After taking the casserole out of the oven, let it sit for about 3 minutes. This short rest helps it firm up just enough, so it slices nicely and isn’t too runny on the plate. I’ve learned this little pause makes a big difference in presentation and taste.

How to Serve Cheesy Yellow Squash Casserole Recipe

Garnishes

I usually keep this simple — a sprinkle of fresh chopped parsley or chives brightens up the colors and adds a fresh note that balances the rich casserole nicely. Sometimes, a little dusting of smoked paprika on top looks pretty and adds a subtle smoky hint.

Side Dishes

To round out the meal, I often pair this casserole with roasted chicken, glazed ham, or even a simple green salad for lighter fare. It’s also fantastic alongside meatloaf or grilled sausages — it adds that creamy veggie element that complements robust proteins.

Creative Ways to Present

For special occasions, I’ve baked this casserole in individual ramekins — it feels extra fancy and helps with portion control when entertaining. You can also top with shredded extra cheese or sprinkle finely crushed nuts for a festive twist that’s sure to impress guests.

Make Ahead and Storage

Storing Leftovers

After it cools, I store leftovers covered in an airtight container in the fridge. It keeps well for up to 3 days without losing that creamy texture or flavor. Just be sure to cool it down before refrigerating to avoid sogginess.

Freezing

You can freeze this casserole once baked — wrap it tightly with foil and place in a freezer-safe container. When I’ve done this, it reheats nicely without losing much quality, making it a handy make-ahead option for busy weeks.

Reheating

To reheat, I pop leftovers in a 350ºF oven covered with foil for about 15-20 minutes, removing the foil in the last 5 minutes to crisp up the topping again. Microwaving works in a pinch but usually softens the cracker topping, which I try to avoid.

FAQs

Final Thoughts

I absolutely love how this Cheesy Yellow Squash Casserole Recipe has become a staple on my table, especially during family get-togethers. It’s the kind of dish that brings everyone to the table with smiles and second helpings. Whether you’re a squash fan or just diving into this veggie, give it a try — I promise you’ll become just as hooked as I am. Cozy, comforting, and downright tasty, this casserole is sure to become one of your favorites!

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