Southwestern Mini Frittatas | Oregonian Recipes

Ingredients

• 2 tablespoons butter, divided
• 1 medium yellow onion, chopped
• 1 red bell pepper, cored and diced
• Kosher salt and freshly ground black pepper
• 2 cups chopped button mushrooms
• 1/2 teaspoon dried oregano
• 10 large eggs
• 1/2 cup crumbled queso fresco or feta cheese