Burrito means "little donkey" in Spanish by the way, but this has nothing to do with the traditional Mexican fayre!
1 onion chopped
1/2 red pepper chopped
1 green and 1 red chilli deseeded and chopped
1 tsp chilli powder (I used hot)
1 tsp Cayenne
A pinch of chilli salt (cos it was there)
Brown the beef in a little oil, then throw all the ingredients into the slow cooker for 8-10 hours on low.