In large heavy-bottomed pot, combine bratwurst and beer. Bring to a boil over medium-high heat. Reduce heat and simmer for 30 minutes.
Preheat grill to medium-high heat (350-400 degrees). Spray grill rack with nonstick, nonflammable cooking spray. Remove brats from pot. Grill brats for 20-25 minutes, turning every 5 minutes.
Place one brat in each bun. Top with desired amount of sauerkraut and mustard and serve immediately.
Courtesy of Family Features. For more great recipes and grilling tips, visit www.johnsonville.com or www.sandra lee.com