In modern times, the word cocktail most often refers to a mixed alcoholic drink, but a crab cocktail is far from that — unless you splash in a bit of vodka for a crab martini version.

Take each cooked pasta button and place a small spoonful of the crab filling in the center. Fold the pasta in half to create a half-moon shape, sealing the edges to enclose the filling. Gently reheat ...