how to cook brats
1 Reduce heat to medium and cook another 10 to 12 minutes. 2  Remove the bratwurst from the beer mixture; reduce heat to low, and continue cooking the onions. 3  Cook the bratwurst on the preheated grill, turning once, 5 to 10 minutes. 4  Serve with the beer mixture as a topping or side.irections. Prep. Cook. Ready In. 1  Preheat an outdoor grill for medium-high heat. 2  When hot, lightly oil grate. 3  Combine the beer and onions in a large pot; bring to a boil. 4  Submerge the bratwurst in the beer; add the red pepper flakes, garlic powder, salt, and pepper.