A flexible, gluten-free breakfast casserole that’s great for using up vegetables and feeding a crowd.

If you love a hearty breakfast casserole but don’t love recipes that are heavy on bread, you’re going to love this version. This casserole is packed with colorful vegetables, protein, and flavor — and it’s naturally gluten-free, too!

One of my favorite things about this recipe is how flexible it is. You can use whatever vegetables you already have in the fridge or garden, making it a budget-friendly way to reduce food waste and create a delicious meal at the same time.

Whether you serve it for breakfast, brunch, or even “breakfast for dinner,” this is one of those recipes that makes life easier during a busy week. 

Here’s the recipe

You can easily swap ingredients based on what you have on hand. That’s part of the beauty of this casserole.

One thing I love about this recipe is that you can prep components ahead of time.

I often cook the vegetables earlier in the day and refrigerate them separately until I’m ready to assemble everything. You can also fully assemble the casserole the night before and refrigerate overnight. 

I baked mine in the Pampered Chef 9″ x 13″ Stoneware Baker, which is one of my favorite pieces because it bakes so evenly and is extra deep — perfect for casseroles and lasagna. 

Freezer-Friendly Meal Prep

This casserole freezes really well, which makes it perfect for busy weeks.

Once cooled:

* Cut into individual squares

* Store in freezer-safe containers or bags

* Reheat for a quick breakfast or easy dinner

Having ready-made meals in the freezer is such a gift to yourself on hectic days. 

Why I Love This Recipe

* Great way to use up extra vegetables

* Naturally gluten-free

* Perfect for meal prep

* Budget-friendly

* Easy to customize

* Freezer-friendly

* Delicious for breakfast OR dinner

Recipes like this remind me that cooking doesn’t have to be complicated to be nourishing and satisfying.

Want to see the tools I used in this recipe? You can browse them here!

Have you ever made a breakfast casserole with vegetables from your fridge or garden? I’d love to hear what combinations you enjoy most!