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Five Slow Cooker Brunch Casseroles

Save time & take the fuss out of your next brunch by serving a slow cooker casserole! Here are five of my favorite slow cooker breakfast or brunch casseroles. All of these casseroles can be cooked overnight or can be made ahead of time. Don’t have a slow cooker? Don’t worry, these casseroles can also be baked in the oven.

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5 Slow Cooker Brunch Casseroles

1. Slow Cooker Classic Overnight Breakfast Casserole

Eggs, hash browns, cheese, vegetables, and the meat of your choice cook overnight in this easy slow cooker breakfast casserole.

cooled egg casserole in the slow cooker

What Size Slow Cooker To Use

All of the breakfast casseroles you see listed here are made with 12 large eggs so you will need a large 6-quart slow cooker. Having said that, you can easily cut any of these recipes in half if you have a smaller 3-quart slow cooker.

2. Slow Cooker Bacon Avocado Breakfast Casserole

This bacon avocado breakfast casserole is easy to make & packed with flavor. Great for meal prep, this pork-filled casserole can be made in your slow cooker or Instant Pot.  This casserole is low-carb & keto. Omit the cheese topping and it’s also paleo & whole30 compliant.

Tips For A Successful Breakfast Casserole

There are a few things you need to do or know to make a slow cooker breakfast casserole a good one:

1) Grease the heck out the slow cooker. When I spray mine heavily with cooking spray, the casserole slides out with no sticking. You can also line your slow cooker with parchment paper or use a slow cooker liner.

2) Let the casserole cool completely before removing it. This too will help it from not sticking to the base.

3) Every slow cooker heats differently. Your casserole might done after 6 hours on low or it might take 8. Insert a knife into the center; when it comes out clean you’ll know it’s done. Mine usually takes about 6 1/2 hours on low.

3. Slow Cooker Denver Omelette Casserole

This slow cooker breakfast casserole has all the ingredients from the classic Denver omelette. Make this low-carb/keto breakfast with minimal effort. This casserole is low-carb & keto friendly.

close up pic of cooked slow cooker denver omelette casserole after being cooked and cut up

Baking Instructions

Yes, all of these casseroles can be baked. Assemble the casserole as you would for the slow cooker but instead add it to a greased 9×13 baking pan instead. Bake at 350 degrees F for approximately 50 minutes. Please note the baking time is approximate so you may need to make some adjustments.

4. Slow Cooker California Burrito Breakfast Casserole

Made famous in San Diego, the California burrito uses french fries instead of rice & beans. This slow cooker version adds eggs for a great breakfast or brunch casserole.

plated Slow Cooker California Burrito Breakfast Casserole

Storing & Freezing Your Casserole

Slow cooker breakfast casseroles will keep for up to 5 days in the refrigerator. After that, you can freeze any leftovers. Freeze for up to 2 months. To serve, thaw overnight in the refrigerator & reheat in the microwave or oven. You can also make any of these breakfast casseroles ahead of time with the sole purpose of freezing it. Breakfast casseroles are great meal prep recipes! To do so, once the casserole has cooled completely, slice and freeze it sections or freeze the casserole as a whole if your freezer permits it.

5. Slow Cooker Egg White Vegetable Frittata

An egg white frittata is a great low-sodium, low-calorie, and low-carb breakfast or brunch option. Load this frittata up with your favorite vegetables and cook it overnight in the slow cooker to wake up to an easy & healthy vegetarian breakfast.

An egg white frittata is a great low-sodium, low-calorie, and low-carb breakfast or brunch option. Load this frittata up with your favorite vegetables and cook it overnight in the slow cooker to wake up to an easy & healthy vegetarian breakfast.

You can find additional slow cooker breakfast recipes HERE


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