My go to things:
Butterfly to make them even, stuff with cheese, roll up, wrap bacon around and bake
Use in stir fries.
Buttefly, make a quick stuffing of saute mushrooms/garlic/breadcrumbs, spread over the breast, roll up and tie with twine once. Bread and fry, or bread and bake (you don't HAVE to tie them if you bake because you don't need to flip them)