Did mine, didn't even sand, just washed down any areas that would obviously be greasy from fingers after years of use (around handles, edges.) I used a gloss interior paint, but exterior would be fine as well. Maybe even hold up better. After one year of use I had a few small areas of chipping or scraping off where my fingernails hit the surface when opening two of my cabinets that do not have knobs. I touched up the paint and then put on a coat of clear poly and all has been well since. I painted professionally for years and found that as long as you have real wood, not the pressboard, you really don't have to do major prep work aside from washing away grease and dirt before painting to get a durable finish. Gloss is the hardest finish, but if you want a more satin look most paints today are very good, but for extra protection you can add a layer of satin poly. Unfortunately pressboard will at some point just bloat up in spots from humidity or water/spills and it will peel off any paint you put on the surface regardless of primer or other prepwork. Primer is really only used to cover up underlying patterns, a dark paint color, to seal up any patch jobs or to create a bond to a very shiny surface. I know chalk paint is all the rage for hard to paint surfaces, but regular paint really will work just as well.