This is a delicious version of pot roast, and made super easy by using a taco seasoning mix.  I like McCormicks.

2 carrots, sliced
1 green pepper, chopped into large chunks
1 onion, chopped into large chunks
2 cloves garlic, minced
2 Tbsp tapioca
2 1/2 lb chuck roast
1 package taco seasoning mix
1 can Mexican-style diced tomatoes
1 medium-sized jar of salsa

Mix veggies, and tapioca in a crock pot. Add beef and sprinkle with taco seasoning. Mix tomatoes and salsa and pour over everything.

Cook on low heat for 6-8 hours, or high heat for 4-5 hours.