For the pineapple sauce, mix peeled, cored and diced pineapple with diced green pepper, diced onion and chopped cilantro. Add 1 tbsp. lime juice and salt to taste. Toss mixture. Set aside.
Mix ground beef, 1/4 tsp salt, 1/4 tsp. black pepper and 1/4 tsp. onion power thoroughly and form mixture into 4 equal oblong patties (shaped for the garlic toast bun). Set aside.
Heat grill to a medium temperature. Grill burger patties on each side, until desired doneness (the internal temperature reaches 145oF for a medium burger) Meanwhile, toast or bake garlic toast according to package directions.
To assemble burger, layer the garlic toast with lettuce leaves, 1 burger patty, 1 slice of Pepper Jack cheese, 1/4 of the pineapple sauce, 1/4 of the avocado slices and top whit garlic toast.
A good kitchen needs quality gadgets. Mirta knows it and suggests the following: