Place bacon strips on a microwave-safe plate lined with paper towels. Cover with another paper towel; microwave on high for 2-3 minutes or until partially cooked. , Meanwhile, cut steak horizontally from a long side to within 1/2 in. of opposite side. Open meat so it lies flat; cover with plastic wrap. Flatten to 1/4-in. thickness. Remove plastic. Place spinach over steak to within 1 in. of edges; top with red peppers. , With the grain of the meat going from left to right, roll up jelly-roll style. Wrap bacon strips around beef; secure with toothpicks. Slice beef across the grain into 8 slices. , Grill, covered, over medium heat 5-7 minutes on each side or until meat reaches desired doneness (for medium-rare, a thermometer should read 135°; medium, 140°; medium-well, 145°). Discard toothpicks., In a small saucepan, combine cream cheese, milk, butter and pepper. Cook and stir over low heat just until smooth (do not boil). Stir in blue cheese. Serve with pinwheels.