Cut bacon in to small pieces, cook and drain (You could use precooked bacon to speed up the process).
Add half bag of hash browns to bottom of slow cooker.
Add half your bacon.
Add half your onions.
Add half your green and red peppers.
Add half your cheese.
Add remaining hash browns.
Add remaining bacon.
Add remaining onions.
Add remaining green and red peppers.
Add remaining cheese.
In a medium sized bowl beat eggs and milk together.
Pour egg mixture over your casserole.
Add salt and pepper on top.
Cook on Low for 4 hours or warm for 8 hours.