As soon as you finish dinner the night before...
Put beef roast and peppers (with juice) in crock pot. I use a double size crock pot, but my daughter makes it with a regular size crock pot and a 1 pound roast.
Cover it with the beer, and don't touch it till the morning. Simmer on low.
In the morning, don't touch unless it needs more liquid. then, add more beer to cover the meat.
At supper, you take out the roast and peppers for serving. Since the beer acts as a tenderizer, it may be easier just to pour it all into a strainer to get rid of the liquid. Make sandwiches with the beef on the crusty bread, and serve the peppers as a side. They will pop with the liquid inside! Enjoy!