Yes. Place the onions into a lightly sprayed 9x13 pan, instead of your slow cooker. Then layer the cube steaks over the top. Whisk together the cream soup, bouillon and beef broth. Pour over the meat. Cover the pan with foil and bake at 350° F for 2 hours, until cube steak is very tender. Voila! Crock Pot Cube Steaks in the oven.