In a skillet, cook beef and garlic until beef is browned; drain. In a large bowl, combine soup, 1 cup of picante sauce, cornstarch, parsley, paprika, salt and pepper; mix well. Fold in beans, 1 1/4 cups of cheese, 1/2 cup onions and the beef mixture. Line pie plate with bottom pastry; fill with bean mixture. Top with remaining pastry; seal and flute edges. Cut slits in the top crust. Bake at 425 for 30-35 minutes or until lightly browned. Let stand for 5 minutes before cutting. Garnish with sour cream, olives and remaining picante sauce, cheese and onions. Yield 8 servings.