2	c.	thinly sliced onions
2	c.	chopped green bell peppers
1	can	kidney beans, drained and mashed (about 15 oz.)
1	can	tomato sauce (8 oz.)
2	cloves	garlic, finely chopped
2	tbsp.	ketchup
1	tbsp.	mustard
1	tsp.	chili powder
		Cider vinegar (optional)
2		sandwich rolls, halved

Combine all ingredients except rolls in slow cooker.  Cover and cook on LOW 5 to 51/2 hours or until vegetables are tender.  Serve on rolls.

Makes 4 servings