This is an adapted recipe from http://www.asweetlife.org.  It makes around 10 lettuce wraps and has 1.48 grams of carbs.

INGREDIENTS:

• 12 slices bacon
• 4 ounces mushrooms, sliced
• 1 1/2 pounds ground beef
• 1/2 teaspoon salt
• 1/4 teaspoon pepper
• 1 cup shredded Cheddar cheese
• 1 small head iceberg lettuce, leaves separated and washed
• Additional salt and pepper to taste
• Hot sauce, optional

DIRECTIONS:

1. In a large skillet, cook bacon to desired crispness.  Remove and let drain on a paper towel-lined plate.
2. Add mushrooms to pan and saute until browned and tender, about 5 to 7 minutes.  Remove from pan and set aside.
3. Add ground beef and season with salt and pepper.  Saute until beef is cooked through, about 10 minutes, breaking up chunks with the back of a wooden spoon.
4. Spoon ground beef into lettuce leaves, sprinkle with cheddar cheese and top with bacon and mushrooms.