This is easy! Saw this on a blog.
Italian Dressing Mix (or any kind of seasonings you like-I didn't have a packet so I used a beef seasoning and italian herbs)
2 pounds Beef (I used a roast I had in freezer)
I seasoned the roast and put it in the crock pot while we were at church. Then, cool and slice the beef into strips. On tortillas layer beef, lettuce, tomato, sour cream and season with a little salt and pepper and more herbs if you like. Wrap and enjoy!