Step 1: Preheat Your Oven

Preheat your oven to 350°F (175°C). Generously grease a 12-cup muffin tin with non-stick cooking spray or line the cups with silicone muffin liners. Eggs have a tendency to stick, so it’s important to grease your muffin tin well to ensure easy removal later.

Step 2: Prepare Your Ingredients

Chop up your vegetables, shred your cheese, and cook your meat. If you’re using bacon or sausage, cook them in a skillet until fully done, then set aside to cool slightly. You can also sauté your veggies, like onions, mushrooms, or spinach, for extra flavor and to reduce their moisture before adding them to the mix.

Step 3: Whisk the Eggs

In a large bowl, crack the 8 eggs and whisk them together with the ¼ cup of milk until well combined and frothy. Adding the milk helps keep the muffins light and fluffy. Season the eggs with salt, pepper, and any optional seasonings like garlic powder or smoked paprika.

Step 4: Add the Fillings

Now it’s time to add in your prepared veggies, cooked meat, and shredded cheese. Stir them into the egg mixture until everything is evenly distributed. This step ensures that each muffin has a balanced amount of fillings.

Step 5: Pour Into the Muffin Tin

Using a ladle or measuring cup, divide the egg mixture evenly into the 12 muffin cups. Be careful not to overfill them—each cup should be about ¾ full to allow the muffins to puff up without spilling over.

Step 6: Bake the Frittata Muffins

Place the muffin tin in your preheated oven and bake for 20-25 minutes. The frittatas are done when the tops are golden and a toothpick inserted into the center comes out clean. Keep an eye on them around the 20-minute mark to avoid overcooking, which can make them dry.

Step 7: Cool and Serve

Once your frittata muffins are done, let them cool in the tin for about 5 minutes before carefully removing them to a wire rack to cool completely. You can serve them warm, or let them cool fully for storage. If you’re meal prepping, let the muffins cool completely before storing in the fridge or freezer.