In medium bowl combine oil, garlic, oregano, dillweed, and 1/4 teaspoon black pepper. Stir in stuffing mix to coat thoroughly. Stir in egg, spinach, and 1/2 cup crumbled feta; mix well. Shape into four 1/2-inch-thick patties.
Heat a griddle or large nonstick skillet over medium heat. Add patties. Cook for 3 to 4 minutes per side or until browned and heated through.
Serve in buns with assorted toppers. Makes 4 servings.