Mexican Beef Sandwich Rolls

I grew up on these and just made for the first time this last weekend since I have been married. I had forgotten how yummy they are!

1 can sliced olives, drained (optional)
1 (7 oz.) can green chili salsa (I bought the La Victoria taco sauce and just used half of it)
1/4 tsp. ground cumin
1/4 tsp. salt
1/2 tsp. chili poowder
6 rectangular french rolls (my mom would just do a big one on a loaf of French bread)
1/2 lb. ground beef
1 onion, chopped
1/4 lb. sliced mushrooms (I used canned)(optional)
4 oz. cheddar cheese, sliced
6 slices crisp cooked bacon

Cut rolls in half lengthwise. Scoop out most of inside. Lightly toast cut sides. Set aside. Brown beef. Add onion and mushrooms. Cook until limp. Stir in seasonings and salsa. Simmer until liquid is absorbed. Place beef filling in hollow rolls. Top with 1 slice of bacon and a slice of cheese. Place the top of the roll on and roll in foil. Heat at 375* for 12 to 15 minutes, or if chilled, 30 minutes.

Enjoy!