Sausage, Mushroom & Pepper Breakfast Casserole for Busy Mornings

Breakfast is one of the easiest meals to keep low in carbs: bacon and eggs, sausage and eggs, ham and eggs — all low-carb and high-fat. Today’s meal is a sausage, mushroom, and pepper breakfast bake loaded with cheese and finished with a light drizzle of white truffle oil. Is it a casserole, a frittata, or a big omelette? It’s all of those and none — a tasty oven-baked egg dish that works for breakfast or the popular “breakfast-for-dinner.”

This breakfast bake is flexible. Substitute ham or bacon for the sausage, or use leftover roast beef mixed with scrambled eggs for another great variation. Mushrooms and eggs are a classic pairing; today we used red, orange, and yellow bell peppers with sweet pork sausage. You can roast peppers over an open flame and peel them for a smoky note, but that step is optional since they’re chopped and baked anyway.

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Preparation and Tips

To roast peppers on a stovetop, char them over an open flame, place them in a sealed plastic bag for a few minutes, then peel off the skin before chopping. If you like heat, swap bell peppers for chopped jalapeños or use hot Italian sausage instead of sweet sausage. A teaspoon of creole seasoning added to the eggs and cheese gives the bake a signature touch.

Oven times vary. The recipe suggests baking 30 minutes at 350°F, but check for doneness like you would a cake: insert a toothpick into the center — if it comes out clean, the bake is ready.

The Secret Ingredient

Cream cheese helps the bake hold together so it won’t collapse like a souffle. Parmesan brings a bold, nutty flavor, and cheddar melts to bind the dish while adding a golden color. This three-cheese blend is ideal; if you add jalapeños, consider Monterey Jack in place of cheddar for a milder melt. Finish each serving with a light drizzle of white truffle oil — it amplifies the egg flavor and elevates the whole dish.

TruffleHunter – White Truffle Oil – Extra Virgin…
Parmigiano Reggiano DOP 18 months 2.2 lb (1kg…
Sherpa Pink Himalayan Salt – Extra-Fine Grain…

We recommend serving each portion with a sprinkle of chopped chives and an extra tiny drizzle of truffle oil for maximum flavor. The recipe is written for an 8 x 8 x 2 inch square baking dish; if you use a larger pan, increase ingredients proportionally. The original portioning yields nine small pieces, but splitting into six hearty servings works well given the low-carb profile and rich taste.

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Sausage, Mushroom, and Pepper Breakfast Bake – A Low Carb Breakfast that is Also Delicious for Dinner!

This sausage, mushroom, and pepper breakfast bake pairs beautifully with morning coffee or tea. It’s a satisfying keto-friendly breakfast that’s equally welcome for dinner. Make it often — we think you’ll love it.

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Sausage, Mushroom, and Pepper Breakfast Bake

Recipe by Joanie and Chris

4.8 from 70 votes

Sausage, Mushroom, and Pepper Breakfast Bake has plenty of cheese and a drizzle of truffle oil. This is a can’t-miss breakfast! Also try it for “breakfast-for-dinner.”

Course: BreakfastCuisine: AmericanDifficulty: Easy

Servings

9

Prep time

15

minutes

Cooking time

45

minutes

Calories

340.1

kcal

Net Carbs

3.6

g

Total time

1

hour 

Ingredients

  • 9 ounces sausage crumbled

  • 3 ounces butter

  • 1 medium onion chopped

  • 3 cloves garlic chopped

  • 4 ounces portobello mushrooms chopped

  • 4 ounces red bell peppers chopped

  • 4 ounces cream cheese softened

  • 8 eggs large

  • 1/2 cup parmesan cheese grated

  • 1 cup cheddar cheese shredded

  • 1 teaspoon creole seasoning

  • sea salt to taste

  • pepper to taste

  • white truffle oil drizzle

  • chives chopped

Instructions

  • Cook the sausage in a skillet over medium-high heat, breaking it into chunks. Drain thoroughly and set aside.
  • Add butter and onion to the skillet and cook 5 minutes until softened. Add garlic and cook 1 more minute.
  • Add chopped mushrooms and peppers and sauté about 5 minutes.
  • Remove from heat, add the sausage back to the pan and stir in cream cheese until melted and well combined.
  • In a large bowl, whisk together eggs, grated parmesan, and cheddar.
  • Butter the bottom of an 8 x 8 baking dish. Spread the sausage mixture across the bottom, pour the egg mixture on top and gently combine a little so the ingredients are mixed.
  • Bake uncovered at 350°F for about 30 minutes, or until a toothpick inserted in the center comes out clean. Top each serving with a drizzle of truffle oil and chopped chives. Serve hot.

Chef’s Notes

  • Leftovers are delicious cold the next day — great for a tapas-style snack.

Nutrition Facts

  • Calories: 340.1kcal
  • Fat: 29.1g
  • Carbohydrates: 4.3g
  • Protein: 15.6g

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