Got a casserole dish? Throw together this easy and savory Chicken Fajita Breakfast Casserole made with chicken breakfast sausage, sautéed veggies and eggs for a low-carb breakfast that will feed a crowd! This chicken fajita breakfast casserole is basically the best of both worlds. The fajita flavors and veggies you know and love surrounded by eggs in breakfast casserole form! Protein-packed, super flavorful, and great for serving a crowd or meal prepping for the week. Let’s get into it.

Fajita Breakfast Casserole Ingredients

For this easy casserole, all you need are a few simple ingredients that you may already have on hand! And the prep work is super minimal as well. All you have to do is chop your chicken sausage, peppers, onions and potatoes into bite-sized pieces, and then everything cooks in your casserole dish. Here’s what you’ll need:

• 1 medium Idaho potato
• 1/2 medium jalapeño
• 2 tablespoons fajita seasoning (we’ll get to this in a sec!)
• 10 large eggs
• 1/4 cup unsweetened almond milk
• 6 links precooked chicken breakfast sausage
• 1 medium red pepper
• 1 medium green pepper
• 1/2 medium white onion
• 1/3 cup shredded Colby jack cheese

Homemade Fajita Seasoning

Ditch the store-bought fajita seasoning packet and make your own at home! We love making fajita anything, but so often forget to pick up a fajita packet from the grocery store. There’s nothing worse when you’re about to make some chicken fajitas or this breakfast casserole and and you have no fajita seasoning at home to use. No fear, making your own fajita spice mix in your own kitchen is so simple! You need 6 basic spices (that you probably already have on hand), and a cute little jar to house your spice mix. Plus, this homemade fajita seasoning doesn’t have the fillers that you’ll commonly find in store-bought mixes. Here’s what you’ll need:

• chili powder
• ground cumin
• garlic powder
• paprika
• salt
• pepper

And get the step-by-step instructions for making this homemade fajita seasoning HERE.

How To Make the Perfect Fajita Breakfast Casserole

Step 1

First, preheat oven to 400ºF and spray an 8-inch by 8-inch baking dish with nonstick cooking spray. THIS is our go-to square baking dish in the Fit Foodie Kitchen.

Step 2

Then, dice your potatoes (we used Idaho potatoes for this recipe, but feel free to sub for any potato you have on hand!) and mince jalapeños. Place in baking dish and drizzle with olive oil. Lightly season with 1/2 teaspoon fajita seasoning, and bake at 400ºF for 10 minutes.

Step 3

While the potatoes are baking, whisk together 10 eggs and 1/4 cup of almond milk (feel free to sub for your preferred un-flavored milk). Set aside. Then, prepare your peppers and onions by dicing finely.

Step 4

Once your potatoes and jalapeños have roasted for 10 minutes, remove from the oven and turn down to 350ºF. Add the rest of the veggies to the baking dish and season with the rest of your fajita seasoning. Toss to evenly coat everything in your fajita seasoning.

Step 5

Pour the egg and milk mixture on top of your veggies and mix until combined.

Step 6

Place in the oven and bake at 350ºF for 40 minutes. Then, add cheese and bake for another 5 minutes.

Step 7

Let cool, and enjoy!

Other Breakfast Recipes with Eggs On Fit Foodie Finds

• Cheesy Sous Vide Egg Bites
• Sausage, Sun-Dried Tomato and Spinach Freezer Breakfast Sandwiches
• Make Ahead Breakfast Burritos
• Sweet Potato Hash Egg Cups
• All-American Hash Brown Egg Cups
• Spinach and Sun-Dried Tomato Egg Cups
• Turkey Fajita Egg Cups
• Bacon-Wrapped Egg Cups
• Sweet Potato Crust Quiche
• Copycat Healthy Egg McMuffins

Still looking for that perfect egg recipe? Check out all our recipes with eggs HERE.

Other Breakfast Casseroles on Fit Foodie Finds

• 26 Breakfast Casserole Recipes
• Spicy Italian Sausage Breakfast Casserole
• Healthy Breakfast Casserole with Sweet Potato Hash Browns
• Healthy Denver Omelette