Zesty sausage, melty cheese, and sauteed veggies unite for a keto breakfast casserole that’s best described as convenient, hearty, delicious, AND low carb.

Still hungry? Check out my whole collection of keto breakfast recipes.

What’s in This Low Carb Breakfast Casserole?

Your typically breakfast casserole ingredients, minus the tots or potatoes, are all you need. But don’t worry, with all the flavor packed ingredients we’re using, you won’t even notice they’re gone!

Italian sausage – spicy or mild will do. If you can only find links, use a knife to slice each sausage down the center, press out the sausage, and discard the casing.
Avocado or vegetable oil – we want a mild tasting oil with a high smoke point.
Veggies – Onion and bell pepper.
Heavy cream – traditional breakfast casseroles often use milk. Substituting for heavy cream saves carbs and makes the casserole silky smooth.
Tabasco – We’re only adding a little, which adds no heat, rather some complexity to the creamy base of this low carb breakfast casserole.
Cherry tomatoes – optional. They do add carbs to this dish (.7 g per cherry tomato to be exact).

Substitutions + Tweaks

As you can imagine, there are dozens of ways to make a low carb breakfast casserole. Here are some ingredients you can switch around to get what you’re craving:

Sub sausage for… bacon or make a breakfast casserole with ham.
Or skip the meat for a vegetarian option.
Try different keto vegetables, like mushrooms, broccoli, or spinach (ala crustless spinach quiche).
Make it spicy by adding more tabasco or diced jalapenos.
Add a crust, check out my keto quiche which uses my incredible keto pie crust.

Psst, for more mix-in ideas, check out these instant pot egg bites, or egg muffins.

How To Make Keto Breakfast Casserole

Not much to this breakfast casserole, just a quicke saute and browning of the meat, then you can let your oven do the rest. Here’s how:

Prep the mix ins: Brown the meat and saute the veggies.

top view of low carb breakfast casserole meat on a pan

top view of low carb breakfast casserole ingredient on a pan

Mix it all together: Whisk together the eggs, heavy cream, and tabasco. Add the shredded cheddar cheese, sausage, veggies, and tomatoes.

top view of low carb breakfast casserole ingredients on a mixing bowl

Bake: Pour into a greased casserole dish + bake!

top view of low carb breakfast casserole

Storing, Freezing, + Reheating

This keto breakfast casserole is meal prep that doesn’t skimp on flavor, the ideal breakfast for those of us who never have time for breakfast. So prep it, slice it, and enjoy hitting the snooze button all week long. Here’s how:

Storing: Store leftover sausage in the fridge in an airtight container. Top with freshly sliced green onions after reheating.
Freezing: Freeze individual slices in their own resealable baggies.
Reheating: Simply reheat in the microwave, from the fridge or freezer.

top view of sliced italian sausage casserole in a plate

Serving Recommendations

This healthy breakfast casserole is great on its own, or with a slice of your favorite bread or toast–check out my keto biscuits or toast up a keto bagel.