Heat an ovenproof pan to medium heat. Melt the butter then saute bell peppers and asparagus until just tender about 5 minutes. Season with salt and pepper. Transfer to a plate. Then cook the bacon until crispy and chopped into small pieces. Add the bacon with the sauteed asparagus and set aside.
In a large bowl, whisk together the eggs and milk. Season with garlic powder, onion salt and black pepper then add the asparagus mixture. Stir to incorporate the ingredients. Pour the egg mixture into the pan and cook for about 2 minutes then top with the cheese. When the bottom starts to brown, transfer it to the oven and broil until top is slightly brown about 2 minutes. Let stand for 5 minutes before serving. Garnish with fresh parsley. Serve
Recipe by The Gluten Free at https://www.theglutenfree.com/gluten-free-asparagus-and-bacon-frittata/