Mix brown sugar and margarine (butter) in small microwave cooking dish.
Heat slowly until well mixed together (stir every minute).
After the brown sugar is well mixed, let cool for a couple minutes and add the catsup to the brown sugar and margarine (butter).
Place elk steaks on broiler pan; cot the top side of elk steaks.
Be sure to preheat the broiler oven and then place in closed oven for about 4-5 minutes, depending on how you like the steak (rare, medium-rare, medium, medium-well, or well). I think it is better to cook them for shorter period for tenderness.
After one side is cooked to satisfaction, turn and coat other side and repeat.