- Step 1
Place flour, salt and pepper into a plastic bag. Add diced beef and shake to coat well.
- Step 2
Place onion, garlic and mushrooms in slow cooker. Top with beef (no need to brown the steak first).
- Step 3
Pour the canned tomatoes over the meat and vegetables.
- Step 4
Add tomato paste, red wine, vinegar, Worcestershire sauce, thyme and sugar. Stir well to combine.
- Step 5
Cook in the slow cooker on low for 8 hours or high for 4 hours.
- Step 6
Add peas for last 30-60 minutes of cooking.
- Step 7
Serve beef stew with mashed potato.