Use a meat tenderizer to pound out the chicken
breasts until about ¼-inch thick.
Heat olive oil in a heavy skillet over medium-high
heat. Saute mushrooms, bell pepper, and onions for 5 minutes, until par-cooked.
Preheat oven to 400 degrees. Lightly grease a
9×13 pan.
Place a pinch of cheese in the center of each
chicken breast. Place a large spoonful of mushroom and bell pepper mixture on
top. Finish off with another pinch of cheese.
Carefully roll up the chicken so stuffing is
completely inside. Secure the chicken with toothpicks. Place in the prepared
pan. Season generously with cajun seasoning. Place a tablespoon of butter on
top of each chicken breast.
Bake in the preheated oven until chicken is
cooked through, to an internal temperature of 165 degrees, about 30 to 40
minutes.
Remove toothpicks before serving. You can serve
the chicken whole, or slice in half, or in 1-inch slices.