In the bowl of an electric stand mixer fitted with a paddle attachment, cream together the butter and powdered sugar on high until a frosting texture forms. Add the egg, vanilla, and almond extract and beat on high until combined. Add the red food gel coloring a few drops at a time until a rich red color appears when mixed. Add the flour and salt and mix on low until a dough comes together.
Wrap the dough in plastic wrap and refrigerate for one hour. While the dough is chilling, prepare two aluminum baking sheets lined with parchment paper.
Preheat the oven to 375°F.
To shape the dough, pinch off 1" sized chunks of dough for the crab bodies and roll between your hands to form a ball. Repeat for 24 total dough balls. Arrange 6 per baking sheet. For the claws, pinch off 1/4" sized chunks of dough and roll into smaller balls. Place on the top sides of the bigger dough balls to form a Mickey Mouse shape. Using the palm of your hand, gently press the Mickey Mouse down to fuse the three balls together and flatten the shape. Be careful not to flatten too much, or you'll lose the 3D crab shape. To finish the claws, use the corner of a square cookie cutter (or a knife) to cut off the claw indents.
Bake each tray for 8 minutes and let cool completely at room temperature before glazing.
Mix the glaze ingredients together in a small bowl until a smooth glaze forms. Dip the crab cookies one at a time upside down in the glaze to coat the tops and let them dry on a drying rack.
Finally, add the sprinkles for the eyes and let the glaze dry at room temperature to harden.