Chipotle Shredded Beef Tostadas

Yield:8 Servings
Ingredients:
2 lbs. boneless beef eye round, fat removed, cut into chunks
1 small white onion, sliced
5 cloves garlic, crushed
1 tsp. salt
1 small onion, chopped
1 clove garlic, minced
1-14.5oz. can diced tomatoes
1 tsp. dried oregano
1 tsp. dried thyme
1 bay leaf
1/4 c bottled chipotle sauce
8 tostadas
chopped onions, to serve
2 large avocados, sliced, to serve
shredded cheese, to serve
sour cream, to serve

1. Combine beef, white onion, crushed garlic, and salt in a large saucepan.Add enough water to cover.Bring to boiling and skim off any foam that rises to the surface.Simmer beef, uncovered,over medium-low heat for about 1 hour or until meat is tender.Remove from heat and shred meat.Reserve broth.
2. In a medium skillet, heat the chopped onions and minced garlic over medium heat and cook for about 5 minutes or until tender.
3.Add the beef, canned tomatoes, oregano, thyme, bay leaf, and chipotle sauce and cook for an additional 15 minutes, stirring occasionally.If beef mixture is to dry, add some of the reserved broth.
4. Remove from heat and place equal amounts of shredded beef on each tostada.Top with avocado slices, shredded cheese, and sour cream, if desired.