Add peanut oil, butter, dried sauerkraut, chopped onions, minced garlic, and brats to 10.5" cast iron skillet and heat to medium heat. Add spices and cover.
Every 3-4 minutes turn over mixture with a spatula.
After about 8 minutes, add 4 pieces of butter, each about 1 tsp, to 4 corners of skillet. Turn browning mixture again.
After mixture has fully caramelized, take off heat and serve! Enjoy!.