Name: Savoury Sweet Potato Casserole
Prep time: 20 min
Cook time: 40 min
Yield: 10
Ingredients: 1.75kg / 3.5lb sweet potato ((3 large or 6 smaller ones)); 1/2 cup (115g) sour cream; 1/2 cup (50g) parmesan (, freshly grated); 2 garlic cloves (, finely minced); 3/4 tsp salt; 1/4 tsp black pepper; 250g / 8oz butter (, salted, cut into 2cm/1" cubes); 15 sage leaves ((Note 1)); 3/4 cup panko breadcrumbs ((Note 2)); 1/2 cup (50g) parmesan (, finely grated); 1/4 tsp each salt and pepper; 150g / 5oz bacon (, streaky, cooked until golden then finely chopped)