Name: Keto Egg and Cheese Breakfast Casserole Recipe
Prep time: 10 min
Cook time: 35 min
Total time: 45 min
Cuisine: American
Ingredients: 8 large eggs; 1 cup heavy cream; 1 cup shredded cheddar cheese; 1/2 cup cooked sausage, crumbled; 1/2 cup diced bell peppers; 1/4 cup chopped green onions; 1 teaspoon garlic powder; Salt and pepper to taste

There’s something wonderfully comforting about waking up to the aroma of a warm, cheesy breakfast already waiting for you. This Keto Egg and Cheese Breakfast Casserole Recipe is exactly that kind of cozy morning treat—rich, savory, and packed with flavors that make keto mornings exciting. Whether you're meal prepping for the week or hosting a weekend brunch, this casserole promises creamy eggs, melty cheese, and just the right touch of savory sausage to start your day right.

A white rectangular baking dish filled with a layered casserole. The bottom layer has browned, cooked ground meat with a crumbly texture. On top, there is a bright yellow melted cheese layer mixed with eggs visible as small pockets of yolk. Scattered over the top are chopped green onions and fresh green herbs, with pieces of red bell pepper adding bright red highlights. The edges of the casserole are golden brown and slightly crisp. The dish is placed on a gray cloth on a white marbled surface, with a white bowl of brown eggs and green leafy herbs blurred in the background. Photo taken with an iphone --ar 4:5 --v 7 — Keto Egg and Cheese Breakfast Casserole, low-carb breakfast casserole, keto savory breakfast bake, easy keto egg casserole, keto sausage breakfast dish

Jump to:

Meet the Magic Behind This Dish
Why You’ll Love This
The Essentials: Ingredients That Do the Work
Step-by-Step: Bringing Keto Egg and Cheese Breakfast Casserole Recipe to Life
Pro Moves to Elevate It
Switch It Up: Creative Variations
Storage & Reheating Tips
Serving Inspiration
Frequently Asked Questions
Notes & Handy Tools
Full Recipe

Meet the Magic Behind This Dish

I came up with this Keto Egg and Cheese Breakfast Casserole Recipe on a chilly Sunday morning when I wanted something hearty yet quick. What sets this dish apart is its irresistibly creamy texture paired with the toasty, golden brown top that forms after baking. The aroma of garlic, cheese, and sausage fills your kitchen and invites you to settle in and savor each bite. You’ll notice how each forkful melts effortlessly, making this casserole such a standout in my breakfast routine.

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Why You’ll Love This

This casserole ticks all the boxes for a keto-friendly breakfast that feels indulgent without being complicated. It’s the perfect blend of creamy eggs and sharp cheddar, kissed by the smoky warmth of sausage and the freshness of peppers and green onions.

Texture That Melts: Silky eggs meet gooey cheese in every bite, creating a luscious mouthfeel you won’t forget.
Flavor Layers You’ll Crave: Savory sausage and aromatic garlic powder elevate this from simple to sensational.
Quick to Master: Minimal chopping and a one-bowl mix mean you can have this ready in under 10 minutes prep time.
Perfect Anytime Meal: Great for breakfast, brunch, or even a comforting dinner option when you want something quick and satisfying.

The Essentials: Ingredients That Do the Work

Keto Egg and Cheese Breakfast Casserole Recipe - Recipe Image — Keto Egg and Cheese Breakfast Casserole, low-carb breakfast casserole, keto savory breakfast bake, easy keto egg casserole, keto sausage breakfast dish

Getting your ingredients right is half the battle won for this Keto Egg and Cheese Breakfast Casserole Recipe. I always recommend fresh, high-quality items so the flavors shine together perfectly. It’s a wonderful balance of creamy eggs, sharp cheddar, and savory sausage with just a splash of fresh veggies for brightness.

Large Eggs: Use fresh, large eggs for the best rise and custardy texture in the casserole.
Shredded Cheddar Cheese: Go for a sharp cheddar to add a bold, toasty flavor that complements the creamy eggs.
Cooked Sausage: Choose a pork or turkey sausage with seasoning you enjoy; I love a slightly spicy variety for extra kick.
Bell Peppers and Green Onions: These add just enough crunch and color without overpowering the dish.
Heavy Cream: This is your secret weapon for richness and that silky, melt-in-your-mouth feel.

Quick Note: Precise amounts and timing live in the recipe card at the end.

Step-by-Step: Bringing Keto Egg and Cheese Breakfast Casserole Recipe to Life

Step 1 — Gather, Chop, and Prep

Before you begin, preheat the oven to 350°F (175°C) to get it ready for that perfect golden crust later. Grab a large mixing bowl, a whisk, and a greased 9x13-inch baking dish. Chop your bell peppers into small pieces and slice the green onions thinly—you want them to distribute evenly through the casserole. If your sausage isn’t cooked yet, brown it in a skillet until it’s crumbly and caramelized. Having everything ready this way keeps you in a smooth prep rhythm.

Step 2 — Heat, Stir, and Build Flavor

In your large bowl, whisk the eggs and heavy cream until they’re combined into a pale, creamy liquid. Sprinkle in garlic powder, salt, and pepper—these simple seasonings infuse every bite. Stir in your cooked sausage, diced bell peppers, green onions, and shredded cheddar cheese until everything’s evenly distributed. You’ll notice the beautiful contrast of colors and the slight sweet aroma from the peppers and garlic. Pour this mixture into your baking dish and slide it into the oven. The sizzle fades, replaced by a comforting oven fragrance as the eggs set and the cheese bubbles into a toasty golden topping.

Step 3 — Finish and Taste-Test

After about 30-35 minutes, your Keto Egg and Cheese Breakfast Casserole Recipe is ready when the eggs are fully set with a firm yet tender texture, and the top has turned a gorgeous golden brown. Let it cool lightly—this helps it hold its shape when sliced. Taste-testing is essential here; you might want to add a sprinkle of extra salt or a dash of hot sauce to customize it just how you like. Once it’s perfect, slice into generous squares and serve warm for that cozy, satisfying start to your day.

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Pro Moves to Elevate It

I’ve learned a few tricks over time that make this casserole even better. For instance, warming your baking dish slightly before pouring in the egg mixture helps form a beautifully set edge. Timing is everything; don’t rush the bake or your eggs might turn rubbery. And if you’re prepping ahead, this casserole freezes beautifully—just slice after baking, freeze, then reheat for a stress-free morning.

Heat Wisdom: Preheat your oven fully and avoid opening the door early to let the top brown evenly.
Timing Trick: Check at 30 minutes; if it jiggles too much, give it a few more minutes but keep a close eye.
Make-Ahead Strategy: Bake the night before, refrigerate, then reheat slices in a toaster oven for a fresh finish.
Common Slip-Up: Overcrowding with ingredients can weigh down texture, so stick to the balance and don’t overstuff.

Switch It Up: Creative Variations

One of the reasons I adore this Keto Egg and Cheese Breakfast Casserole Recipe is how effortlessly it invites creativity. You can play with different cheeses, switch out proteins, or add veggies that suit your mood and the season. This flexibility keeps it exciting every time you make it.

When You’re Feeling Bold

Try swapping the sausage for crumbled bacon or spicy chorizo for a smoky punch. Toss in some sautéed mushrooms or sun-dried tomatoes to deepen the flavor and texture profile. If you love heat, a sprinkle of crushed red pepper flakes or diced jalapeños will wake up your taste buds. I once added fresh herbs like thyme and oregano for a garden-fresh twist that my guests couldn’t stop complimenting. Make it yours and have fun with it!

Storage & Reheating Tips

This Keto Egg and Cheese Breakfast Casserole Recipe keeps incredibly well. Store any leftovers in an airtight container in the fridge for up to 4 days. For longer storage, slice it into portions and freeze in a single layer before stacking. When you’re ready to enjoy, thaw overnight in the fridge and reheat gently in the oven or microwave. Reheating in a toaster oven works wonders to revive that toasty top and creamy center—just like fresh out of the oven.

Serving Inspiration

This casserole stands well on its own or alongside a few simple sides. For casual mornings, pair with crisp avocado slices or a handful of cherry tomatoes for freshness. If you’re hosting brunch, offer a side of tart berry compote or a drizzle of creamy hollandaise sauce to elevate the plate. A hot cup of black coffee or a sparkling herbal tea makes the perfect companion. I love plating it with a small mixed greens salad dressed in lemon vinaigrette to brighten things up.

Frequently Asked Questions

Can I use other cheeses besides cheddar?

Absolutely! Monterey Jack, mozzarella, or gouda work beautifully and offer different creamy textures and flavors.

Is this casserole good for meal prep?

Yes! It’s perfect for meal prepping. Bake in advance, refrigerate or freeze portions, and reheat as needed throughout the week.

Can I omit the bell peppers?

Definitely! If you prefer, substitute with other low-carb veggies like spinach or zucchini for variety and nutrition.

How do I know when the casserole is fully cooked?

The casserole should be set but still tender; if the center jiggles slightly, it needs a few more minutes. The top should be a lovely golden brown.

Notes & Handy Tools

To make this Keto Egg and Cheese Breakfast Casserole Recipe a breeze, I recommend a few essentials: a good-quality nonstick or ceramic 9x13-inch baking dish to prevent sticking, a sharp chef’s knife for quick veggie prep, and a silicone spatula for gentle mixing. A wire whisk helps achieve that perfect egg and cream blend, and having a reliable oven thermometer ensures consistent baking temps. These tools save you time and keep the cooking process smooth and enjoyable.

Full Recipe