01 - 
                Turn your oven on to 375°F (190°C). Spray the muffin tin with non-stick spray or line it with paper liners.
              
              
              
                02 - 
                Warm up olive oil in a small pan over medium heat. Toss in the mushrooms and cook for about 3 to 4 minutes until they’re soft. Then leave them to cool.
              
              
              
                03 - 
                In a mixing bowl, blend the eggs together using a whisk. Then stir in the broccoli, cooked mushrooms, Parmesan, garlic powder, salt, pepper, and bell peppers if you’re using them. Mix everything until it looks even.
              
              
              
                04 - 
                Take the egg mix and pour it evenly across the muffin cups, making sure each one is about 75% full. Sprinkle a bit of shredded mozzarella on top of every cup.
              
              
              
                05 - 
                Put the muffin tin in the oven and bake for 18 to 20 minutes. They’re ready when the tops look slightly golden and the eggs are firm.
              
              
              
                06 - 
                After baking, let the egg cups sit in the pan for a few minutes before popping them out. Serve them hot or store them in the fridge for another day.