Oktoberfest Casserole

2 cans (10-1/2 ounces each) condensed cheddar cheese soup, undiluted
1 cup beer or chicken broth
1 cup sour cream
1 package (32 ounces) frozen cubed hash brown potatoes, thawed
1 can (14 ounces) sauerkraut, rinsed and well drained
2 cups shredded cheddar cheese
1 package (14 ounces) fully cooked bratwurst links, chopped
2 cups pretzel pieces

Preheat oven to 350°. In a large bowl, whisk soup, beer and sour cream until combined. Stir in potatoes, sauerkraut, cheese and chopped bratwurst. Transfer to a greased 13x9-in. baking dish. Cover and bake for 45 minutes.
Uncover; bake 30 minutes. Top with pretzel pieces. Bake until bubbly and heated through, 12-15 minutes longer. Let stand 10 minutes before serving.