Fully-loaded slow-cooker pea soup

Name: Fully-loaded slow-cooker pea soup
Prep time: 10 min
Cook time: 6 h
Total time: 6 h 10 min
Cuisine: British, European
Ingredients: 500g bacon bones; 500g pkt green split peas; 2L (8 cups) salt reduced chicken style liquid stock; 8 (about 200g) streaky bacon rashers; 27.00 gm maple syrup; 4 thick slices sourdough bread; 100g (1 cup) grated 4-cheese blend or coarsely grated mozzarella; 450g (3 cups) frozen peas; Sour cream or crème fraiche, to serve; Sliced green shallot, to serve