Brown hamburger and taco seasoning well.
Flatten each roll into a 4-inch square. Place about 1 tablespoon seasoned ground beef in one corner of each flattened roll. Top with 1-2 jalapeno slices, 2 cubes cheese and 1 teaspoon diced onion. Moisten edges of dough square with water. Fold opposite corner over filling to make a triangle. Press edges together to seal. Place on a sprayed baking sheet.
Bake at 350°F 15-20 minutes or until golden brown. Serve with sour cream, fresh salsa and guacomole.