Day 6 Breakfast: Frittata + Mushrooms, Onions & Cheddar Cheese
Prep Time:
5 minutes
Cook Time:
12-15 minutes
Serves:
1
Level:
Beginner
About the Recipe
A fluffy, protein-packed frittata loaded with sautéed mushrooms, caramelized onions, and melted cheddar cheese. This low-carb breakfast is rich, satisfying, and perfect for meal prep or a quick weekday breakfast.

Ingredients
Frittata Base:
3 large eggs (pasture-raised preferred)
1 tablespoon heavy cream (optional for extra fluffiness)
¼ teaspoon sea salt
¼ teaspoon freshly ground black pepper
Filling:
½ cup mushrooms, sliced (cremini, button, or shiitake)
¼ small onion, finely diced
2 tablespoons butter or olive oil (for sautéing and greasing the pan)
¼ cup shredded cheddar cheese (sharp or mild)
¼ teaspoon garlic powder (optional for added depth)
1 tablespoon chopped fresh parsley (optional for garnish)
Preparation
Prepare the Ingredients:
Slice and Dice:
Slice the mushrooms and finely dice the onion.
Whisk the Eggs:
In a bowl, whisk together the eggs, heavy cream (if using), sea salt, and black pepper.
Whisk until the mixture is smooth and slightly frothy.
Sauté the Mushrooms and Onions:
Heat the Skillet:
Heat a medium oven-safe skillet (such as cast iron) over medium heat.
Add 1 tablespoon of butter or olive oil and swirl to coat the pan.
Sauté the Onions:
Add the diced onions and cook for 2-3 minutes until they become translucent and lightly caramelized.
Add the Mushrooms:
Add the sliced mushrooms and sauté for another 3-4 minutes until tender and golden.
Optional: Sprinkle with garlic powder for extra flavor.
Assemble and Cook the Frittata:
Add the Egg Mixture:
Pour the whisked eggs over the mushroom and onion mixture.
Gently stir to distribute the filling evenly.
Add the Cheese:
Sprinkle the shredded cheddar cheese evenly over the top.
Cook on Stovetop:
Cook on the stovetop for 2-3 minutes over low heat until the edges start to set.
Finish in the Oven:
Transfer the skillet to a preheated oven at 375°F (190°C).
Bake for 8-10 minutes until the frittata is fully set and the cheese is melted and golden.
Alternative Cooking Method:
No Oven Option: Cover the skillet with a lid and cook on low heat for 6-7 minutes until the eggs are fully set.
Assemble and Serve:
Plate the Frittata:
Use a spatula to slide the frittata onto a plate or cutting board.
Slice and Garnish:
Cut into wedges and garnish with fresh parsley for added brightness.
Tips to Make It Even Easier:
Use Pre-Sliced Mushrooms: Save prep time by using pre-sliced mushrooms.
Pre-Chop Onions: Dice onions ahead of time and store in the fridge for quicker assembly.
Make It Ahead: Prepare the frittata the night before and reheat in the oven or microwave for a quick breakfast.
Use an Oven-Safe Skillet: A cast-iron skillet works best for frittatas, allowing a seamless transfer from stovetop to oven.
Add Pre-Cooked Veggies: Use leftover roasted vegetables or sautéed greens for extra variety.
Simple Flavor Boost Options (Optional):
Add Fresh Herbs: Stir in chopped fresh basil, thyme, or parsley for extra flavor.
Spicy Kick with Jalapeños: Add finely diced jalapeños for a hint of heat.
Crumbled Bacon or Sausage: Add cooked crumbled bacon or sausage for a meatier option.
Parmesan Topping: Sprinkle grated Parmesan over the frittata before baking for a crispy, cheesy finish.
Sour Cream Drizzle: Add a dollop of sour cream or sugar-free salsa on top before serving.
Chili Flakes for Heat: Sprinkle crushed red pepper flakes for a spicy touch.
Recipes Created by BloodSugarChef.com
Meal Plan by American Diabetes Society