Mediterranean Bison Sliders

Heat oven to 450 °F. Cook rice as directed on package. In a small skillet over low heat, toast almonds until golden, 8 minutes. In a bowl using hands, mix bison, rice, almonds, raisins, 1/4 cup parsley, 2 tablespoons mint, salt and pepper. Form into 24 balls, 1 1/2 inches each. Grease a 9" x 13" baking dish with 2 tablespoons olive oil; arrange meatballs in dish, touching. Bake until firm and slightly pink in center, 15 minutes. In a bowl, combine yogurt, lemon juice, 1 tablespoon water, remaining 1 tablespoon olive oil, parsley, mint; saffron (if desired), and salt and pepper to taste. In a microwave-safe bowl, heat marinara sauce. Top each brioche bun with 2 tablespoons marinara sauce, meatball, 1/2 tablespoon yogurt sauce and a mint leaf.