My Low-Carb and Keto Breakfast Casserole Master Recipes can help you make a breakfast casserole out of what’s in the fridge! This post includes breakfast casserole basic tips, master recipes, cooking times for various-sized dishes, and links to some of my favorite breakfast casserole recipes on the blog!

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I’m guessing many low-carb eaters are struggling with what to cook right now, so I thought I’d remind you about these Low-Carb and Keto Breakfast Casserole Master Recipes. Of course my blog has lots of standard recipes for Breakfast Casseroles, but this post has tips for making this type of egg bake breakfast from what you have in the fridge! And I bet most of you are doing a bit more of that kind of cooking right now.

And there are recommendations for various-sized pans, and a few other helpful tips, and hopefully you can follow my recipe template and make a tasty breakfast casserole with whatever ingredients you have on hand. If not, this post can give you ideas for things to keep on hand to make this type of dish!

And since I’ve shared so many low-carb and Keto breakfast casseroles on the blog, I’m also sharing links to some of those recipes. I hope this post will help if you’re really trying to start out the day with a low-carb breakfast! 

Weekend Food Prep:

Low-Carb and Keto Breakfast Casserole Master Recipes are perfect to make on the weekend, so this post has been added to my category for Weekend Food Prep which can help you find recipes you can prep or cook on the weekend and eat during the week! Use Breakfast Recipes to find more recipes like this.

Low-Carb Southwest Egg Casserole close-up photo

Low-Carb Southwest Egg Casserole

Breakfast Casserole Basic Tips:

  • The only “must have” in this type of breakfast casserole is eggs; everything else can be varied to taste or depending on what you have on hand.
  • I used to add milk or half and half to the eggs; now I rarely bother with it.
  • I like to use cottage cheese stirred into the eggs for creaminess and more protein, but it’s optional.
  • I think most any combination of breakfast casserole ingredients is improved with green onions but they’re always optional.
  • When I use veggie ingredients like mushrooms, peppers, broccoli, asparagus, or zucchini, I always saute or blanch them for a few minutes before putting them in the casserole dish.
  • I put the meat and/or veggie ingredients into the casserole dish first, pour the eggs over, then gently stir with a fork to get the ingredients well distributed.
  • Even though I like scrambled eggs on the runny side, I cook the breakfast casseroles until the eggs are slightly browned on top.
  • I’ve never made a breakfast casserole without Spike Seasoning (affiliate link), but any combination of spices that you like in eggs will be good in these.
  • Using non-stick spray or olive oil on your pan before adding the ingredients is important or the pan will be hard to get clean.
  • Breakfast casseroles of all types keep at least a week in the fridge. Some of my early recipes might still say breakfast casseroles can be frozen, but now I never freeze them. 
  • To reheat breakfast casserole, microwave 1 minutes or slightly longer. Be careful not to cook too long.

Close-up photos for Broccoli and Three Cheese Keto Breakfast Casserole

Broccoli and Three Cheese Keto Breakfast Casserole

Low-Carb and Keto Breakfast Casserole Master Recipe for 10X14 Casserole Dish:

(This size dish will make 8-10 servings, depending on appetites)

  • 14-18 eggs
  • 2-3 tsp. Spike Seasoning (affiliate link) or any spice mix you like on eggs
  • salt and pepper to taste (I rarely use salt)
  • 1/4 c sliced green onion (optional, but good)
  • 1 1/2 cups diced ham, Canadian bacon, turkey sausage, or other meat of your choice (precooked)
  • 1 1/2 cups grated low fat cheese
  • 8 oz. cottage cheese, rinsed so whole curds remain (completely optional)
  • 12 oz. sauteed mushrooms, red pepper, broccoli, zucchini, or other veggies

Broccoli, Ham, and Mozzarella Baked with Eggs finished casserole in baking dish with plates in background

Broccoli, Ham, and Mozzarella Baked with Eggs

Low-Carb and Keto Breakfast Casserole Master Recipe for 9X13 Casserole Dish:

(This size dish will make 6-8 servings, depending on appetites.)

  • 10-14 eggs
  • 1-2 tsp. Spike Seasoning (affiliate link) or any spice mix you like on eggs
  • salt and pepper to taste (I rarely use salt)
  • 2-3 T sliced green onion (optional, but good)
  • 1 1/4 cups diced ham, Canadian bacon, turkey sausage, or other meat of your choice (precooked)
  • 1 1/4 cups grated low fat cheese
  • 6 oz. cottage cheese, rinsed so whole curds remain (completely optional)
  • 10 oz. sauteed mushrooms, red pepper, broccoli, zucchini, or other veggies

Breakfast Casserole with Asparagus and Artichoke Hearts close-up photo

Breakfast Casserole with Asparagus and Artichoke Hearts

Low-Carb and Keto Breakfast Casserole Master Recipe for 7X11 or 8X8 Casserole Dish:

(This size dish will make 4-6 servings, depending on appetites.)

  • 8-10 eggs
  • 1 tsp. Spike Seasoning (affiliate link) or any spice mix you like on eggs
  • salt and pepper to taste (I rarely use salt)
  • 1-2 T sliced green onion (optional, but good)
  • 1 cup diced ham, Canadian bacon, turkey sausage, or other meat of your choice (precooked)
  • 1 cup grated low fat cheese
  • 4 oz. cottage cheese, rinsed so whole curds remain (completely optional)
  • 8 oz. sauteed mushrooms, red pepper, broccoli, zucchini, or other veggies

Pork Lover's Keto Breakfast Casserole finished casserole in baking dish

Pork Lover’s Keto Breakfast Casserole

Breakfast Casserole Instructions and Cooking Times For All Sizes:

  • Preheat oven to 375.
  • Spray glass or non-stick metal casserole dish with nonstick spray or olive oil.
  • Dice meat and grate cheese.
  • Saute any veggies you’re using in a small amount of olive oil for 3-5 minutes (depending on what type of vegetable.) Harder vegetables like broccoli should be briefly boiled and drained well.
  • In bottom of casserole dish layer meat, veggies, green onions (if using) and cheese.
  • Mix eggs with Spike Seasoning, salt, and pepper until whites and yolks are well combined.  (Add cottage cheese to egg mixture if using.)
  • Pour eggs over meat/cheese mixture, then stir gently with a fork so that all the ingredients are evenly distributed in the eggs.
  • Bake until eggs are firmly set and top is lightly browned, about 35-45 minutes for 10X14 size pan, about 30-35 minutes for 9X13 size pan, or 20-25 minutes for 7X11 or 8X8 size pan.
  • Serve hot and enjoy!

Favorite Breakfast Casserole Recipes:

Low-Carb Mushroom and Feta Breakfast Casserole
Broken Arm Breakfast Casserole with Cottage Cheese, Bacon, and Feta
Breakfast Casserole with Spinach and Goat Cheese
Kale, Bacon, and Cheese Breakfast Casserole
Bobbi’s Low-Carb Breakfast Casserole with Egg, Cheese, and Green Chiles
Low-Carb Southwestern Egg Casserole
Low-Carb Breakfast Casserole with Sweet Italian Sausage, Mushrooms, and Cheese
Low-Carb Breakfast Casserole with Asparagus, Mushrooms, and Goat Cheese

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