Slow Cooker Mac and Cheese

Name: Slow Cooker Mac and Cheese
Prep time: 10 min
Cook time: 1 h 30 min
Total time: 1 h 40 min
Cuisine: British
Ingredients: 350 g dried macaroni pasta; 25 g butter; 700 ml milk; 250 ml cream (double or heavy cream); 125 g mature cheddar (grated); 75 g Parmesan (grated); ½ tsp basil (dried); 1 tsp English mustard; 1½ tsp paprika (ground); ½ tsp black pepper (ground); 2 garlic cloves (crushed); 1 slice of bread (toast and grate or blend into breadcrumbs); 25 g mature cheddar (grated); handful parsley (finely chopped)