Slow Cooker Sweet Potato Curry

Name: Slow Cooker Sweet Potato Curry
Total time: 50 min
Yield: 4 servings
Ingredients: 1 sweet potato Diced; 1 courgette Diced; 2 onions Diced; 4 tomatoes Diced; 7/8 cup cashew nuts; 1 can chopped tomatoes; 1 can coconut milk; 1 teaspoon minced garlic Or 4 Cloves crushed; 1 teaspoon minced ginger Or 1/2 Inch ginger root minced; 2 teaspoons Garam Masala; 1 teaspoon curry powder I use mild; 1/2 teaspoon chilli powder; 1/2 teaspoon black pepper; 2 tablespoons tomato puree; 4 tablespoons flour