Like a dreamy mash-up between a key lime and lemon meringue pie, this surprisingly fast and easy dessert is adapted from Bill Smith, who retired in 2019 after 25 years as the chef at Crook’s Corner, a Chapel Hill, N.C. restaurant that closed in June 2021. He was inspired by the lemon pies he ate at seafood restaurants in Atlantic Beach, N.C., while vacationing there as a child. While a food processor makes quick work of the saltine cracker crust, you don’t really need any special equipment —…