This easy crockpot London broil recipe is tender and delicious! It can be started in the morning and ignored all day until you are ready to eat. If you’d like gravy, prepare it with the drippings just before serving, or use the drippings for an au jus for dipping.
Season London Broil with salt and pepper. Insert garlic clove slices into roast by making small slits in roast.
Place about half of the sliced onion in the crock-pot and put roast on top of onions. Top with the remaining ingredients except onion. Arranging the remaining onion slices on top of the roast.
Cover and cook on low for about 8-10 hours (time varies with individual crockpots).
When roast is tender and ready to serve, place on a serving platter. You may serve it with the juices or make a gravy if desired.
To make gravy, blend 2 tablespoons cornstarch with 2 tablespoons of cold water. Form a smooth paste. Pour drippings from crockpot pan into a saucepan and add cornstarch mixture, whisking until smooth. Continue cooking at a simmer, stirring frequently, until thickened.