Gather the ingredients. Preheat the oven to 325 degrees F (165 degrees C).
Combine sauerkraut, tomatoes, sugar, bacon, and black pepper in a 9x13-inch casserole dish.
Bake in the preheated oven until bubbly around the edges and caramelized on top, about 2 hours and 15 minutes.
Variations
Moisten with apple juice
