Created by LindasBusyKitchen on June 12, 2014
Step 1: Preheat grill to medium-high heat.
Step 2: Split rolls.
Step 3: Remove casing from the sausage.
Step 4: Combine sausage, chopped basil and next 5 ingredients (through ground sirloin) in a medium bowl.
Step 5: Divide beef mixture into 6 equal portions with moist hands, shaping each into a 1/2 inch thick burger patty. Press thumb in the center of each burger, leaving a nickel-sized indentation.
Step 6: Place burgers on a grill rack coated with cooking spray or oil. Grill 6 minutes. Turn burgers over, and grill 2 minutes.
Step 7: Place a slice of cheese on each burger and grill 6 minutes, or until a thermometer registers 160°F.
Step 8: Remove from the grill, and let stand 5 minutes.
Step 9: Lightly grill the rolls.
Step 10: Place 1 basil leaf on the bottom half of each roll.
Step 11: Top each roll with 1 burger, 1 tablespoon marinara sauce, and the roll top.