Smoky BBQ Chicken Pie | Slimming & Weight Watchers Friendly

Name: Smoky BBQ Chicken Pie | Slimming & Weight Watchers Friendly
Prep time: 20 min
Cook time: 1 h 18 min
Total time: 1 h 38 min
Cuisine: American
Ingredients: 6 boneless, skinless chicken thigh fillets; 2 medium onions (peeled and sliced); 2 cloves garlic (peeled and crushed); 1 x 400g tin cannellini beans ( drained); 1 x 400g tin chopped tomatoes; 1 tbsp tomato puree; 1 tbsp lemon juice; 1 tbsp BBQ seasoning; ¼ tsp smoked or ordinary paprika; 1 tbsp balsamic vinegar; 2 tbsp Worcestershire sauce; 2 tbsp white wine vinegar; 1 tbsp hot pepper sauce; 1 tsp mustard powder; 1 tsp sweetener (or caster sugar); low calorie cooking spray; 800 g potatoes (peeled and cut into large chunks); 3 tbsp skimmed milk; 20 g reduced fat Cheddar cheese (finely grated); salt and pepper (to taste)