Chilli Verde

1 Roast
2 cans tomatoes
2 cans green chilies
2 onions
1 1/2 tsp oregano
1/8 tsp garlic powder
salt and pepper

Cook roast in crockpot with onion and shred. When shredded, add tomatoes, chilies, garlic powder and oregano. Simmer to cook 2-3 hours. Stirring occasionally. Thicken with flour and simmer 2-3 minutes. Salt and pepper to taste. Serve on tortillas or in hard taco shells with toppings of your liking.