Slow Cooker Italian White Beans with Mushrooms - Slender Kitchen

Ingredients

• 16 oz. dry white beans
• 1 onion, thinly sliced
• 2 celery stalks with leaves, diced
• 4 tbsp. tomato paste
• 14 oz. canned diced fire roasted tomatoes
• 1 lb. mushrooms, sliced
• 1 green pepper, chopped
• 6 garlic cloves, sliced
• 1 tbsp. Italian seasoning
• 1/2 cup red wine (or vegetable broth)
• 4.5 cups vegetable broth
• 1.5 tbsp. capers, drained
• 1/2 tsp. red pepper flakes (optional)
• 1 cup black olives