In a medium-sized bowl, whisk together flour, cocoa powder, baking powder, and salt. Set the bowl aside.

In a larger mixing bowl, combine granulated sugar and vegetable oil. Beat in eggs and vanilla extract until smooth. Add gel food coloring as desired.

Carefully fold the dry mixture into the wet mixture until just combined. The dough should be thick and slightly sticky.

Cover the bowl with plastic wrap and refrigerate the dough for at least 1 hour.

Preheat your oven to 350°F (175°C) and line baking sheets with parchment paper.

Scoop tablespoon-sized portions of dough, roll into balls, and coat in powdered sugar.

Place coated dough balls on prepared baking sheets and bake for 10-12 minutes, or until cracked on top.

Let cookies cool on the baking sheets for about 5 minutes before transferring to a wire rack.