Slow cooked spicy sausage casserole

Ingredients

• 8 Scottsdale Pork sausages
• 2 tablespoons olive oil
• 2 cloves garlic, sliced thinly
• 8 small onions, peeled
• 2 red capsicum, diced
• 400g small portabello mushrooms
• 400g can tomatoes, diced
• 400g cannellini beans, drained
• 2 small fennel bulbs, sliced
• 1 long sweet red pepper
• ½ cup red wine
• ½ cup beef or chicken stock
• 40g tomato paste
• ¼ cup basil leaves, torn
• ¼ teaspoon chilli flakes
• Mashed potato or polenta to serve