Preheat your oven to 350°F and line two baking sheets with parchment paper.

In a large mixing bowl, cream together the softened butter and brown sugar until smooth.

Beat in the egg, then stir in the molasses, milk, and vanilla extract until well combined.

In a separate bowl, whisk together the flour, baking soda, cinnamon, and ginger.

Gradually mix the dry ingredients into the wet mixture until a dough forms.

On a floured surface, roll out the dough to about 1/4 inch thickness.

Use a pig-shaped cookie cutter to cut out the cookies and place them on the prepared baking sheets.

Bake for 12-15 minutes or until the cookies are set and the edges are just starting to brown.

Let the marranitos cool on the baking sheets for a few minutes before transferring them to a wire rack to cool completely.