Onion and Zucchini Frittata

Ingredients

• Olive oil (2 tablespoons)
• Onion (1 medium, thinly sliced)
• Zucchini (1 medium, sliced into half-moons)
• Eggs (6 large)
• Milk (1/4 cup)
• Salt (1/2 teaspoon)
• Black pepper (1/4 teaspoon)
• Grated cheese (such as cheddar or mozzarella) (1 cup)

Instructions

1. Preheat the oven to 350°F (175°C).
2. In a non-stick skillet, heat the olive oil over medium heat.
3. Add the sliced onion and zucchini to the skillet. Cook, stirring occasionally, for about 5 minutes, or until the vegetables are softened and fragrant.
4. In a large mixing bowl, whisk together the eggs, milk, salt, and black pepper until well combined.
5. Pour the egg mixture evenly over the cooked vegetables in the skillet, ensuring the vegetables are distributed throughout.
6. Sprinkle the grated cheese evenly over the top of the frittata.
7. Transfer the skillet to the preheated oven and bake for 15-20 minutes, or until the frittata is set in the center and the cheese is melted and golden brown.
8. Remove from the oven and let it cool for a few minutes before slicing into wedges and serving warm.