One of our favorites, especially in winter, is sausage and sauerkraut in the crock pot. Our recipe for simple sausage and kraut here, is much simpler than the Alsatian choucroute garnie beloved by the good German speaking folks of the world.
A true Alsatian choucroute garnie can be a little complicated on the ingredient side, using duck fat, raw bacon or pork belly, several types of berries and so on. Stuff we don't usually keep in our pantry on short notice. However, we did find this one below from Christine Gallary, at Chowhound to be doable and very good.
1 medium yellow onion, halved and thinly sliced
Kosher salt
Freshly ground black pepper
2 pounds prepared or homemade sauerkraut, drained and excess liquid squeezed out
2 teaspoons caraway seeds
10 black peppercorns
5 juniper berries
2 bay leaves
1 pound Yukon Gold potatoes, scrubbed and cut into roughly 1-1/2-inch chunks
2 pounds boneless country pork spareribs, cut crosswise into 3-inch pieces
12 ounces cooked kielbasa, cut crosswise into 3-inch pieces
1/2 cup low-sodium chicken broth
1/2 cup dry white wine
Dijon or whole-grain mustard, for serving