Grilled Shrimp Tostones with Guacamole | Try something new for grilling season and add this recipe to your family’s grilling favorites or Taco Tuesday menu! Homemade tostones make an easy appetizer or delicious snack topped with juicy marinated shrimp and homemade guacamole made from scratch. The shrimp get the royal flavor treatment with a quick marinade. Serve on crisp-fried plantain tostones for a special treat or enjoy multiple tostones per person to make this a weeknight family dinner.