In a large frying pan, saute your onions in oil for about 10 minutes until soft and transfer to your slow cooker pot.
Use your pan again to gently fry the butternut squash, diced vegetables and garlic for about 5 minutes before transferring them to your slow cooker pot.
Add beans, tomatoes, cider, vegetable stock and herbs to your slow cooker pot and stir well.
Cook on low for 8 hours or on high for 4 hours. Add salt and pepper to taste.
Serve sprinkled with the crunchy breadcrumb topping if using.
Optional: Make your topping
Preheat oven to 350°F / 180°C / Gas Mark 4
Toss your breadcrumbs with garlic, parsley and olive oil and place on a baking tray.
Bake for 10 to 12 minutes, checking halfway through cooking time and move the breadcrumbs about to prevent burning.
Notes
Slow Cooker Vegetable & Cider Cassoulet freezes well. The optional garlic and parsley crunchy topping can be frozen separately.
Nutrition information is approximate and meant as a guideline only.