Egg White Grill (Copycat Chick Fil A)

1 Preheat oven to 350 degrees. 
2 Add cooking spray to grease a muffin tin. 
3 Pour 1/4 cup of egg whites into 6 of the muffin tins. 
4 Add the chicken breast on a greased baking sheet. 
5 Place the pans of egg whites and chicken into the oven. Bake at 350 for 20 minutes. 
6 While the egg whites and chicken are baking, prepare the rest of the sandwiches. 
7 Cut the English muffins in half. Add a slice of cheese on 1/2 of the English muffin. 
8 When the chicken and egg whites are finished cooking, add one of each onto a sandwich. 
9 Wrap the finished sandwiches in aluminum foil until ready to eat. 
10 When ready to eat: heat up the sandwich by broiling in the oven until warm.