Heat oil in medium fry pan and saute pepper and onion. When tender, add ground beef and brown. Drain then return to heat.
Combine all remaining ingredients except the cheese. Stir into ground beef mixture and cook until mixture thickens slightly. Remove from heat.
Cut rolls in half and spoon mixture onto roll bottoms. Top with cheese. Broil both top and bottom of sliders for 1-2 minutes to melt the cheese. Place tops on buns and serve warm.