Brown ground beef in large skillet. Stir in onions, tomatoes, cumin and garlic powder; cook and stir until onions are tender. Add corn chips; toss lightly. Place meat mixture in 12x8-inch baking dish. Top with VELVEETA. Bake at 350°F for 15 minutes or until VELVEETA is melted. Top with jalapenos and enjoy the good taste of VELVEETA.