If you like a little heat, try making spicy meatball subs using a Thermomix. In a food processor, combine ground beef, breadcrumbs, minced jalapenos, chopped cilantro, minced garlic, and a variety of spices like cumin, paprika, and cayenne pepper. Shape the mixture into meatballs and cook them in a skillet until browned and cooked through. To assemble the subs, use your favorite sub rolls, spicy marinara sauce, and slices of pepper jack cheese. Spread spicy marinara sauce onto the rolls, add the spicy meatballs, and top with pepper jack cheese. Place the subs in the oven until the cheese is melted and the rolls are toasted. These spicy meatball subs are perfect for those who love a little kick in their meals.