Sliders with Spicy Berry Sauce

Directions

1. In a saucepan, combine the first eight ingredients; bring to a boil. Reduce heat; simmer, uncovered, 15-20 minutes or until thickened, stirring occasionally. Cool slightly. Transfer to a food processor; process until pureed. Reserve 1/4 cup sauce for brushing burgers.
2. For sliders, split rolls horizontally in half. Spread bottoms with butter. In a large bowl, combine beef, salt and pepper, mixing lightly, but thoroughly. Shape into twenty-four 1/2-in.-thick patties, pressing an indentation in the center of each.
3. In two batches, grill burgers, covered, over medium heat 3-4 minutes on each side or until a thermometer reads 160°, brushing tops with reserved sauce after turning. Top with cheese; grill, covered, 15-30 seconds longer or until melted. Serve on rolls with onion, tomatoes and remaining sauce.