This recipe is exactly what I was looking for! I'm making Swiss Steak for the Super Bowl today and it's very similar to my recipe except for the sour cream. I do put sour cream in the mashed potatoes though. I also put Brown Gravy mix to the sauce at the end to thicken for gravy. Oh yeah I have never used brown sugar either. I thought I was the only one who made Swiss Steak this way and must remember something about how my mom used to make it.

Missing the cooking instructions. I would add chopped green pepper to the ingredient list. Preheat your oven to 325°F. Take your steak slices and saute in oil for a couple minutes on each side until browned in a pan that can go in the oven. Remove meat to a bowl. Saute veggies in the same pan.until browned. Deglaze the pan with your choice of broth, red wine or water. Bring to a simmer, add the rest of the ingredients except sour cream., stir well. Nestle your steaks into the sauce, leaving the tops unsubmerged. Pop in the oven and bake uncovered for 20 min. Check for doneness, should be fork tender. If not give.it another 20. Also add liquid and stir to maintain a fluid sauce. When the meat is tender remove from. Oven and let sit until the bubbling stops
Add the sour creme into the sauce. This should be pretty good!