Slow Cooker Swiss Steak

My mom made swiss steak a lot, back in the day. It was one of her go to meals. My mom was a big fan of her electric skillet and this dish was easily prepared in hers. She used cube steaks, a tenderized piece of meat that the butcher would prepare. I make mine using London Broil and since I don't have an electric skillet, mine goes into the slow cooker. London Broil is perfect for the slow cooker because it is a tougher piece of meat. The slow cooker breaks it down so it becomes very tender. I can make this on the weekend when I have more time and freeze it for another day.

2 pounds London Broil(round steak) cut across the grain in thick strips
1 large onion, peeled and sliced
2 large bell peppers(I use red), seeded and cut into strips
1 28oz can of crushed fire roasted tomatoes
1/2 cup beef stock
1/2 cup dry red wine
1 tsp dried oregano
2 cloves garlic,minced
salt and pepper
2 tbsp olive oil-divided

Heat the oil in a large skillet, add the meat, sprinkle with salt and pepper, and brown on all sides. Add the meat to the bottom of the slow cooker. Return the skillet to the heat, add the remaining oil and brown the onions. Add the onions, bell peppers and garlic to the slow cooker. Pour the tomatoes and beef stock over all. Sprinkle the oregano over the top. Add more salt and pepper if desired. Cover and cook for 8 hours on low. Serve over rice.