Slow Cooker Fajita Stew

Slow Cooker Fajita Stew

2-1/2 lbs. boneless beef top round steak
1 onion, chopped
2 cloves garlic, minced
14 oz. can diced tomatoes, undrained
1 oz. envelope fajita seasoning mix, or 2 Tbsp. Homemade Fajita Mix
1 red bell pepper, cut into 1" pieces
1 green bell pepper, cut into 1" pieces
1/4 cup flour
1/4 cup water

Trim excess fat from beef and cut into 2" pieces. Combine with onion in a 3-4 quart slow cooker. Mix together fajita seasoning mix (either purchased or your own homemade) and undrained tomatoes and pour over beef. Place peppers on top. Cover crockpot and cook on low for 7-9 hours until beef is tender.
Combine flour with water in a small bowl and stir well to mix. Add gradually to crockpot and stir well. Cover slow cooker and cook on high for 15-20 minutes until thickened, stirring occasionally. Serve stew with hot cooked rice or hot couscous.