INGREDIENTS
1
green bell pepper, chopped
1
yellow onion, chopped
2 tbsp
olive oil
2 tbsp
chicken stock (optional)
1 lb
ground beef
3 tbsp
taco seasoning
2
large roma (plum) tomatoes, chopped
1/2 tsp
salt
1 8 ounce package
shredded Cheddar cheese
12
large romaine lettuce leaves