Crockpot Swiss Steak

1-1/2 lbs. beef round steak, cut 3/4 inch thick
3 teaspoons flour
1 teaspoon salt
1 teaspoon dry mustard
1 teaspoon black pepper
1 teaspoon garlic powder
2 teaspoons shortening
1 (16 ounce) can tomatoes
1 small onion, sliced
1 stalk celery, sliced
2 medium carrots, sliced
1 teaspoon Worcestershire sauce
1/4 water

Cut meat into pieces that will fit in your crockpot. Combine flour, salt,
mustard, pepper, and garlic powder. Pound 2 tablespoons of the flour mixture
into the meat. Brown the meat in the shortening on both sides. After
browning meat, transfer to crockpot. Stir remaining flour into pan drippings
in the skillet. Stir in the remaining ingredients and cook until thick and
bubbly. Pour over meat in the crockpot. Cook on low for 8 to 10 hours. Serve
with hot cooked noodles or rice.