-
Prep Time: 15 minutes
-
Cook Time: 20-25 minutes
-
Total Time: 35-40 minutes
-
Intensity: Easy (This recipe requires simple chopping and mixing—perfect for beginner cooks!)
-
Servings: 12 muffins (Standard 12-cup muffin tin)
-
Yield: 12 omelet muffins
The Ingredients (The Last of the List)
-
8 large eggs
-
1/3 cup milk (dairy or unsweetened almond milk for keto)
-
1/2 tsp salt
-
1/4 tsp black pepper
-
1/2 tsp garlic powder
-
1 cup chopped fresh spinach, roughly packed
-
1/2 cup diced bell pepper (any color)
-
1/4 cup finely diced onion (yellow or red)
-
1/4 cup diced mushrooms
-
1/2 cup shredded cheddar or mozzarella cheese (optional, omit for dairy-free)
-
1 tbsp olive oil or avocado oil (for sautéing)
-
Optional: 2 tbsp chopped fresh chives or parsley for garnish
Instructions
-
Preheat and Prep: Preheat your oven to 375°F (190°C) . Generously grease a 12-cup muffin tin with non-stick cooking spray or oil. Even in a non-stick pan, this step is crucial to ensure the muffins pop out easily.
-
Sauté the Aromatics: While the oven heats, heat 1 tablespoon of olive oil in a medium skillet over medium heat. Add the diced onion, bell pepper, and mushrooms. Sauté for 3-4 minutes until they begin to soften. This step brings out their sweetness and prevents the muffins from becoming watery. Add the chopped spinach and cook for another minute until it has just wilted. Remove from heat and let it cool slightly.
-
Whisk the Eggs: In a large mixing bowl, crack the 8 eggs. Add the milk, salt, pepper, and garlic powder. Whisk vigorously for about 1-2 minutes until the mixture is frothy and completely uniform. This incorporates air and ensures a fluffy texture.
-
Combine the Filling: Add the slightly cooled sautéed vegetables to the egg mixture. If you are using cheese, add it now. Stir everything together until the veggies are evenly distributed.
-
Fill the Muffin Tin: Carefully ladle or pour the egg mixture into the prepared muffin cups. Fill each cup about 3/4 of the way full to leave room for the muffins to puff up. An easy way to do this is to use a 1/4 cup measuring cup; it will fill each cup perfectly.
-
Bake to Perfection: Carefully transfer the muffin tin to the preheated oven. Bake for 20 to 25 minutes. You’ll know they are done when the tops are set and no longer jiggly, and the edges are lightly golden brown. A toothpick inserted into the center of a muffin should come out clean.
-
Cool and Serve: Remove the pan from the oven and let it rest in the pan for 5 minutes. This allows them to firm up and steam away from the sides. After 5 minutes, run a butter knife or silicone spatula around the edge of each muffin to loosen them, then gently lift them out. Transfer to a wire rack to cool slightly, or enjoy warm!
Storage & Meal Prep Tips
-
Refrigerate: Store cooled muffins in an airtight container in the refrigerator for up to 4 days.
-
Freeze: These muffins freeze beautifully! Place the cooled muffins in a single layer on a baking sheet and freeze for 1 hour. Transfer the frozen muffins to a freezer-safe bag or container. They will keep for up to 3 months.
-
Reheat: To reheat, simply pop one or two in the microwave for 30-45 seconds. You can also reheat them in a toaster oven or air fryer at 350°F for 5-7 minutes to crisp up the edges slightly.
Recipe Notes & Variations
-
Don’t Overfill: Filling the cups to the top can cause the muffins to spill over and create a mess. Stick to the 3/4 full rule.
-
Mix-Ins: This recipe is a perfect canvas. Try adding cooked and crumbled bacon or sausage, diced ham, sun-dried tomatoes, or different cheeses like feta or pepper jack.
-
Make it Dairy-Free: Simply skip the cheese and use unsweetened almond milk or oat milk.
Nutrition Information
The following nutrition information is an estimate per muffin (1 out of 12) and will vary based on the specific ingredients and optional additions used.
| Nutrient | Amount per Serving |
|---|---|
| Calories | 85 kcal |
| Total Fat | 6g |
| Saturated Fat | 2g |
| Cholesterol | 165mg |
| Sodium | 180mg |
| Total Carbohydrates | 2g |
| Dietary Fiber | 0.5g |
| Sugars | 1g |
| Protein | 7g |
| Vitamin A | 15% |
| Vitamin C | 10% |
| Calcium | 4% |
| Iron | 5% |