Spanish Chorizo & Butter Bean Slow Cooker Stew

Ingredients

• 225 g chorizo sausage, paper removed and chopped into chunks ((£1.85))
• 1 white onion, finely chopped ((£0.09))
• 3 cloves garlic, minced ((£0.20))
• 1 pack of cherry tomatoes, sliced ((£0.49))
• 375 g butter beans, dried ((£1.20))
• 1 can of chopped tomatoes ((£0.32))
• 180 g spinach ((£0.75))
• 5 tbsp sour cream ((£1.00))
• Handful of chopped chives ((£0.50))
• Handful of cheddar (optional garnish)
• 1 tbsp tomato puree
• 2 tsp paprika
• ½ tsp cayenne chilli powder
• 1.8 litres chicken stock