Double-stacked bacon burgers with slow-roasted sweet onions | Slimming World

Ingredients

• 1kg sweet potatoes, cut into chips
• Low-calorie cooking spray
• 500g lean beef mince (5% fat or less)
• 1 small onion, finely chopped
• 5 small gherkins, finely chopped
• 2 garlic cloves, crushed
• 4 bacon medallions, visible fat removed
• 4 x 60g wholemeal rolls, split
• Little gem lettuce leaves, to serve
• 2 tomatoes, sliced
• Large green salad, to serve