Preheat oven to 350 degrees.
In a shallow bowl, combine flour, salt, and pepper. Heat the oil in a large skillet over medium heat.
Dredge cutlets in flour mixture, shaking off excess, then carefully place in skillet and brown on both sides; transfer to an ungreased baking pan.
In the same skillet, sauté the onion, celery, and garlic until tender. Add remaining ingredients then bring mixture to a boil and whisk up all of the browned bits from the bottom of the pan; pour over the pork.
Cover baking pan with foil and bake for 1 hour or until juices run clear and a meat thermometer reads 160 degrees.