Hawaiian Beef Sliders

Directions

1. Drain pineapple, reserving juice and 1-1/2 cups pineapple (save the extra pineapple for another use). In a large bowl, combine 3/4 cup reserved crushed pineapple, pepper and salt. Crumble beef over mixture and mix lightly but thoroughly. Shape into 18 patties; place in two 11x7-in. dishes.
2. In a small bowl, combine soy sauce, ketchup, vinegar, garlic, pepper flakes and reserved pineapple juice. Pour half the marinade into each dish; cover and refrigerate 1 hour, turning once.
3. Drain and discard marinade. On a lightly oiled grill, grill patties, covered, over medium heat or broil 4 in. from heat. Grill or broil until a thermometer reads 160° and juices run clear, 4-5 minutes on each side.
4. Grill buns, uncovered, until toasted, 1-2 minutes. Serve burgers on buns with spinach, remaining pineapple, bacon and, if desired, jalapeno peppers.