Kielbasa Casserole

Directions

1. 1
   Cut kielbasa sausage into 2-inch pieces. Slash each piece with a sharp knife to cut through the skin and about 1/4-inch into meat.
2. 2
   Place sausage into a 10-inch skillet.
3. 3
   Arrange all of the peppers and onion rings around the sausage.
4. 4
   In a screw-top jar, combine the beer and prepared mustard. Cover and shake well. Pour mixture into skillet.
5. 5
   Bring to boiling.
6. 6
   Reduce heat, cover and simmer for 10 minutes or until vegetables are tender. Serve sausage and onion with a slotted spoon.