Cut the meat into strips, season with salt and pepper. Fry in a little oil in portions and place in a baking dish. Cut the onions into rings, fry them as well and distribute them on the meat. Drain the peaches and collect the juice. Cut the peaches into wedges and place them on top of the onions. Mix a sauce made from vegetable broth, cream, half of the peach juice and a bottle of shashlik sauce, bring to the boil and place in the baking dish. Put the casserole in the preheated oven at 200 degrees for 45 minutes.