Melt the margarine in a large skillet over medium-high heat. Add the ground beef, onion, jalapenos, garlic, and seasoned salt and cook until browned, about 10 minutes. Remove from the heat and let it cool a bit, then mix in the spinach, bread crumbs, and cheeses. While still warm, put a couple of tablespoons of the mixture in each tortilla and roll up (it should be approximately 1-inch in diameter). To serve, cut tortillas in 3-inch sections, reheat in the microwave, and top with Alfredo or marinara sauce.