I like them plain, Goose.  They have a wonderful fresh, sweet flavor. 

My husband likes creamed peas and potatoes.  Just cook the potatoes in water, add peas when potatoes are almost done and cook until peas are tender.  In another saucepan make a white sauce with equal parts butter and flour and milk until desired consistency and combine with drained peas and potatoes.

If you are not watching your diet, you can make the potatoes and peas  in heavy cream.  Delish......