I browned the outside of the beef in a frying pan and then put the beef broth, water, vinegar in the crock pot on low for 8 hours.
I have no idea what rotel tomatos are and couldn't find them at the grocery store, but I used 1/2 can of diced tomatos with garlic and onions, and a can of chilis.
I wasn't sure which enchilada sauce to get, so I bought a can of red and a can of green and put 1/2 of each in the bottom and the other half on top.
I also used mexican cheese.
They were yummy! I noticed on the recipe that you can put how many servings in and it will adjust the recipe. I just wish I had noticed that prior to making them, cause it made a ton (way too much for 3 people).