You can save time with your prep work by getting beef stew meat from your butcher counter. This is a tougher cut of beef, like the top round London broil, so it goes great with slow-cooking meals because the meat has time to get tender.
You can also cook the beef tips in the crock pot. Cook on low for 5-6 hours or 3 to 4 hours on high.
Make sure you don’t peek while the beef is in the oven. This is when the magic happens.