HELP! Stew Beef Meat and chicken kabobs, How long do I need to bake them in the oven and at what temp?

You can't use stewing beef for kabobs. It's called stew beef because it needs to cook or "stew" for hours.Stewing beef is very tough and a better choice might be a sirloin. Boneless chicken is a good choice for kabobs. Onions, bell pepper, squash and tomatoes are all good choices. The key is to keep everything about the same size so they cook evenly. Typically you do kabobs on the grill but if doing in the oven I would Broil them. And do not use a batter. Some simple olive oil with salt/pepper and your favorite spices is enough.