Combine butter, chopped cilantro, parsley, onion, and red pepper. On waxed paper or plastic wrap shape into a cylinder about 1 inch on diameter and 8 inch round. Wrap and freeze.
Shape meat into 6 large balls. Cut six 3/4 inch lengths of frozen seasoned butter.
Make a depression into the center of the meat; place a frozen seasoned butter patty into each meatball.
Shape into patties, about 1 inch thick, being careful not to expose butter. Broil on grill, 4 inches from heat. Cook 4-5 minutes on each side.
Serve on burger buns with fries peppers and onions.
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