Italian Sausage and Pepper Frittata

Preheat oven to 375°F (190°C).

Heat olive oil in a 10-inch oven-safe, non-stick skillet over medium heat. Add Italian sausage and cook, breaking it up with a spoon, until browned and cooked through, about 5-7 minutes. Drain any excess grease.

Add diced red and yellow bell peppers to the skillet with the sausage. Cook for 5-7 minutes, stirring occasionally, until the peppers are tender-crisp.

In a medium bowl, whisk together eggs, milk, salt, and black pepper until well combined. Stir in the grated Parmesan cheese.

Pour the egg mixture evenly over the sausage and peppers in the skillet. Cook on the stovetop for 2-3 minutes, or until the edges of the frittata begin to set.

Transfer the skillet to the preheated oven and bake for 15-20 minutes, or until the frittata is set in the center and lightly golden brown.

Remove from oven, let cool for a few minutes, then slice and serve warm.