1. Preheat your oven to 350°F (175°C). Generously grease a 9-inch oven-safe skillet with olive oil, making sure to get the sides too to prevent sticking.
2. In a mixing bowl, whisk together eggs, Greek yogurt, milk, salt, and black pepper until well combined and smooth with no yogurt clumps. Really whisk it—you want it frothy and fully incorporated.
3. Stir in diced bell peppers, chopped spinach (make sure it’s dry), diced red onion, and crumbled feta cheese into the egg mixture. Distribute everything evenly.
4. Heat the greased skillet over medium heat for about a minute until warm, then pour the egg mixture into the skillet. Don’t stir—just let it sit.
5. Cook for 3-4 minutes without stirring or disturbing. You’ll see the edges start to set and pull away from the sides while the center is still liquid. This is what you want.
6. Using oven mitts (the handle is hot!), carefully transfer the skillet to the preheated oven. Bake for 15-20 minutes or until the frittata is puffed up, set in the center with no jiggly liquid, and slightly golden on top. Start checking at 15 minutes.
7. Remove from the oven (that handle is still scorching!) and let it cool in the skillet for a few minutes. This helps it finish setting and makes it easier to slice.
8. Run a knife around the edges to loosen, then slice into wedges. Serve warm, garnished with additional crumbled feta and fresh herbs like dill or parsley if you have them.

Nutrition Information (Per Slice):

• Calories: 165
• Carbohydrates: 5g
• Protein: 13g
• Fat: 10g
• Fiber: 1g
• Sodium: 420mg
• Sugar: 3g
• Calcium: 15% DV

This provides excellent protein from eggs, yogurt, and cheese for a balanced, satisfying meal.

Notes:

• Use full-fat Greek yogurt—non-fat is too watery and won’t create the right texture.
• Pat spinach dry—excess moisture makes the frittata watery.
• Oven-safe skillet is crucial—cast iron works great.
• Don’t overcook—pull it when there’s still a slight jiggle in the center.
• That handle is HOT—always use oven mitts when moving the skillet.

Storage Tips:

Store leftover Greek yogurt frittata covered in the fridge for up to 4 days—perfect for meal prep. Serve cold or reheat gently in a 300°F oven for about 10 minutes, or microwave individual slices for 30-45 seconds. Don’t freeze—the texture gets watery and weird when thawed. This is best eaten fresh or within a few days of making. Great cold in lunchboxes or reheated for quick breakfasts all week.

Serving Suggestions:

• With Toast and Fruit: Classic complete breakfast
• Over Mixed Greens: Light lunch with a side salad
• With Roasted Potatoes: Heartier brunch spread
• Cold in a Wrap: Easy grab-and-go breakfast

Mix It Up (Recipe Variations):

Mediterranean Herb Version: Add 2 tablespoons fresh chopped dill, oregano, and parsley to the egg mixture for more authentic Greek flavors.

Sun-Dried Tomato and Olive: Add chopped sun-dried tomatoes and sliced kalamata olives with the vegetables for intense Mediterranean flavor.

Mushroom and Herb Frittata: Substitute sautéed mushrooms for peppers and add fresh thyme for earthier, French-inspired flavors.

Smoked Salmon Addition: Fold in pieces of smoked salmon after baking for a luxurious brunch upgrade.

What Makes This Recipe Special:

This Greek yogurt frittata showcases how traditional Italian frittatas can be lightened and enhanced with Mediterranean ingredients. The Greek yogurt creates incredible fluffiness and adds protein while reducing heaviness compared to cream-based versions. The combination of tangy yogurt and salty feta with fresh vegetables creates balanced, satisfying flavors that taste indulgent while being genuinely nutritious. It’s proof that healthy brunch food can be exciting and delicious when you use the right techniques and quality ingredients.