Keto Sausage and Egg Casserole: 21g Protein

By Annette

Keto Sausage and Egg Casserole: 21g Protein

It’s Tuesday morning, there are four people in the kitchen, and you have exactly zero bandwidth to stand at the stove.

This casserole was built for that exact Tuesday.

Everything goes into one dish the night before. The oven does the rest. And the whole family gets a hot breakfast that clears 21 grams of protein per serving.

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đź“Š The Macros

🥩 PROTEIN: 21g

Calories 395 · Carbs 2g · Fat 35g · Fiber 0g Protein density: 5.3g protein per 100 calories Serves 10 · ~50 min total · meal-prep goldmine

That’s a full, hot breakfast for ten people from one dish, with enough protein to hold everyone to lunch.

This version uses 10 eggs instead of 7, divided into 10 generous servings instead of 12. One extra layer of eggs, slightly larger portions, and the protein number clears 20g honestly and easily.

🍳 The Recipe

Keto Sausage and Egg Casserole. Serves 10. About 15 minutes of prep, 35 minutes in the oven.

Brown the sausage, layer it in the dish, whisk the eggs and cream, pour it over everything, and bake. That’s genuinely the whole process.

Ingredients (serves 10)

  • 1 lb breakfast sausage, mild or hot (the main protein engine)
  • 1/2 green bell pepper, chopped
  • 1/4 onion, chopped
  • 10 eggs (up from 7, the second protein layer)
  • 3/4 cup heavy whipping cream
  • 2 cups shredded cheese, divided (cheddar or Monterey Jack)
  • 1 tsp mustard
  • Dash of nutmeg
  • 1/2 tsp salt
  • 1/4 tsp black pepper
  • 1 tsp Worcestershire sauce (optional)

Method

  1. Preheat oven to 350°F and grease a 9x13 casserole dish.
  2. Brown the sausage in a skillet until halfway cooked, then add the bell pepper and onion. Cook until sausage is cooked through, then drain excess grease.
  3. Spread the sausage and veggie mixture into the casserole dish.
  4. In a bowl, whisk together the eggs, cream, mustard, nutmeg, salt, pepper, and Worcestershire (if using). Stir in 1 3/4 cups of the cheese.
  5. Pour the egg mixture over the sausage layer. Use a spoon to gently combine everything in the dish.
  6. Sprinkle the reserved 1/4 cup cheese on top.
  7. Bake for 30 to 35 minutes, until the center is set and the top is golden.

Make-ahead: assemble the night before through step 6, cover with foil, refrigerate. Pull it out while the oven preheats, bake as directed. Refrigerates well for 4 days, reheats beautifully in the microwave.

Serving this to a crowd? Reply and tell me how it landed. I read every reply.

🔄 The Swap

Add 3 eggs to bring the total to 10, and serve 10 portions instead of 12. That’s all. Eight extra grams of protein per serving, and the casserole actually holds you through the morning.

The original recipe uses 7 eggs divided into 12 servings, which lands at 12g per serving. Three more eggs and slightly fewer (but more generous) servings flip that number to 21g without changing the flavor or technique at all.

Want even more? Swap the heavy cream for Greek yogurt, blended smooth. It won’t change the texture the way you’d expect, it cuts about 150 calories per serving, and it adds another 2 to 3 grams of protein per portion.

🔬 The Science

Why does this casserole work so well as a midlife-muscle-friendly breakfast?

Eggs are one of the most complete protein sources on the planet. Each egg delivers 6 grams of protein and a full amino acid profile, including the leucine your muscles need to stay in a building-and-repair cycle rather than a slow-breakdown cycle.

Breakfast protein has an outsized effect on the whole day. Research consistently shows that front-loading protein at the first meal reduces total calorie intake later without requiring willpower. Your hunger signals just quiet down when the morning protein target is met.

The fat here earns its place. Heavy cream and sausage are both high in fat, and that fat slows gastric emptying meaningfully. You won’t be hungry again in two hours. The carbs are practically zero, so there’s no blood sugar spike to crash from either.

Ten eggs, one dish, twenty-one grams of protein per serving. Make it Sunday and you’ve given the whole week a running start. [QUOTABLE]

đź’ˇ The Takeaway

One dish, one bake, ten servings, 21 grams of protein each.

This is the kind of recipe that solves multiple mornings at once. Make it Sunday, slice it into portions, and breakfast is handled through the middle of the week.

Send this to someone who says mornings are too chaotic for a real breakfast. She can prep this the night before and just hit reheat.

If you want a full week of this kind of planning already done for you, it’s waiting.

Download the free 7-Day 120g-Protein Meal Plan → Seven days of meals and snacks, every day hitting 120g of protein, with a full grocery list and honest macros on every plate.

Written by Annette. Real food, honest macros, not medical advice.

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