Good-Cooking - Four-Bean Baked Beans

Ingredients

• 1 (1 pound) can pork and beans
• 1 (1 pound) can kidney beans
• 1 (1 pound) can butter beans, drained
• 1 (1 pound) can French-style green beans, drained
• 1/2 to 1 pound bacon, cut into cubes
• 1 tablespoon prepared mustard
• 2 onions, chopped (about 1 cup)
• 1/2 cup catsup
• 1/2 cup brown sugar, firmly packed
• 1/4 cup molasses
• 2 tablespoons vinegar
• Dash of Worcestershire sauce
• 1/2 teaspoon salt
• 1 (18 ounce) can crushed pineapple, drained well (optional)