Drunken Burgers With Marsala Onions
Season beef with salt and pepper. Using the Hamburger Press & Keepers Deluxe Set, divide ground beef evenly between 4 keepers; insert press to form patties. Refrigerate until ready to marinate.
In the base of the Power Chef® System fitted with blade attachment, add garlic, salt, parsley, clove, olive oil, Marsala, and balsamic. Cover and pull cord until garlic is minced. Pour marinade into the base of the Season-Serve® container; add onions.
Place burger patties in marinade. Seal and refrigerate 3 hours. Flip Season-Serve® container to marinate other side of patties; refrigerate an additional 3 hours or overnight. Remove burgers from marinade.
On a medium grill, or in a non-stick skillet over medium heat, cook burgers 6 minutes; flip and cook an additional 3 minutes or until burgers register 155° F/66° C. Meanwhile, pour marinade and onions into a non-stick skillet*. Bring to boiling, reduce heat to medium. Cook, stirring occasionally, until marinade thickens and onions become soft, about 8 minutes. Serve burgers with Marsala onions and your choice of buns.