Find a recipe for an IPA that looks good, then add ~1 lb/gallon mangos in the secondary with the dry hops. for two weeks I just did a papaya pale ale like this a few weeks back with good results.
I assume it was the Mango Mama from Townhall Brewing? Haven't had it, but have heard great things. Their base IPA is supposed to be terrific as well, very hoppy, go with lots of hops near the end of the boil, and several ounces for dry hopping. According to their website they use "Amarillo, Cascade, Centennial and Mt. Hood hops."
Hope that helps, good luck.