I don't have a recipe for curry power but I do use a curry paste I get at an asian market, the brand is Mae Ploy it comes in red, yellow, green and a few other curry flavors. all natural ingredients, no preservatives or artificial colors. I fry a spoon or 2 up then add a can of coconut milk and whatever protein and veggies im having. dinner done!
I see amazon has this brand: http://www.amazon.com/s/ref=nb_sb_noss_1?url=search-alias%3Daps&field-keywords=mae%20ploy&sprefix=mae+p%2Caps&rh=i%3Aaps%2Ck%3Amae%20ploy
I can vouch for the red and green curry paste, great stuff.
I know this is a super old thread, but there is a curry powder in the new BP cookbook. I tried it and it's pretty good.
Here it is : All ingredients in powdered form, of course.