Toast buns on the grill with the wieners.
Mix ingredients in small airtight storage container. Refrigerate until ready to take to the picnic. Store in cooler until ready to use.
Zesty Salsa Dogs
Omit tomato mixture. Cook wieners as directed; place in buns. Top with combined 1 cup TACO BELL® Thick & Chunky Salsa, 1/2 cup KRAFT Original Barbecue Sauce and 1/2 cup chopped green onions. Sprinkle each with 2 Tbsp. KRAFT Shredded Cheddar Cheese.