Crockpot Beef Stew

Based on a recipe from the Sunset Crockery Cookbook, altered to be gluten free:

Ingredients:

1 onion, chopped
2 C baby carrots
1 lb baby red potatoes, scrubbed and quartered
1 lb mushrooms, sliced
2 - 3 lbs stew beef or beef round, cubed
1/4 C sweet rice flour
2 tsp thyme
1 (14 oz) can diced tomatoes
1/4 C red wine or beef broth
1 pkg frozen peas (about 10 oz)
salt and pepper

Directions:

Place vegetables into Crockpot; coat beef cubes with sweet rice flour, add to Crockpot and sprinkle with thyme. Add tomatoes and wine or broth. Cover and cook 8 - 10 hours on Low. Skim off any fat and stir in frozen peas. Turn heat to High, cook until peas are heated through (15 minutes or so). Adjust seasonings and add salt and pepper to taste.