Beef with tortillas

1 Tbsp olive oil 2 Tbsp butter 2 pounds ground chicken or turkey 1 15 oz. can small white beans, rinsed and drained 1 carrot , chopped 1 medium onion ,[...]

1 lb lean ground beef 1/4 cup chopped onion 1 minced garlic clove 1 tablespoon butter 1 (16 ounce) can pinto beans , rinsed and drained 1 (16 ounce) can white[...]