Supreme Baked Beans

3 cans pork and beans
1 pound ground beef
8 strips bacon (cut into small pieces)
1 bottle commercial BBQ sauce
1 large onion, diced
1 green bell pepper, diced
1/2 cup diced celery
1/2 teaspoon garlic powder
1 teaspoon red pepper flakes
1/2 to 1 cup brown sugar
1/4 cup prepared mustard
1/4 cup catsup

Brown beef and bacon with onions, peppers and celery. Drain well. Mix all ingredients in crockpot and cook on LOW for about 4 hours.