Egg White Frittata

Bahan-bahan (2 porsi)

• 1 tablespoon unsalted butter or coconut oil
• 1 red bell pepper (diced (or 1 cup chopped vegetables of choice))
• 1 cup egg whites (or the whites of 8 large eggs)
• 2 g reen onions (finely chopped)
• 1/2 teaspoon Italian seasoning
• 1/4 teaspoon kosher salt
• 1 1/2 cups roughly chopped or torn fresh spinach
• 2 tablespoons shredded cheddar (feta, or Parmesan cheese)
• Hot sauce (optional, for serving)
• Sliced fresh avocado (optional for serving)