I created this recipe when I was trying to put something together for dinner. It was so good. My kids couldn't stop saying "mmmm" all through dinner!
Heat butter and olive oil in pan over medium to medium high heat.
Mix flour, salt and pepper on a plate or deep dish- set aside.
Pound chicken breast to flatten. Dredge chicken in flour mixture.
Brown chicken in olive oil and butter. Once brown (about 5 mins on each side) remove chicken and keep covered.
Add chopped onion to pan and brown- it doesn't have to be completely tender- about 3-4 minutes
Add Marsala wine, horseradish and capers. Stir to combine.
If you don't have a pan that is oven safe pour pan ingredients in oven safe dish. Place chicken on top of sauce and cover. Cook about 30 minute I made up some pasta and put the sauce over the pasta, you could also use rice.