Step 1

In a medium bowl, combine the flour, salt, and baking soda. Set aside.

Step 2

In a large bowl, beat the butter and sugar together until light and fluffy. Add the eggs and vanilla and beat until combined.

Step 3

Gradually add in the flour mixture to the butter mixture and beat until well combined. A smooth dough should start to form.

Step 4

Divide the dough into three portions. Mix a few drops of yellow gel food coloring into one portion, a few drops of red gel food coloring into the second portion, and the black cocoa powder into the third portion.

Step 5

Place a piece of wax paper onto a flat work surface. Pinch off pieces of the different colored doughs and gently press them onto the wax paper next to each other to make a marble effect. Transfer the dough (with the wax paper) to a baking sheet. Place a second piece of wax paper over the top and chill in the refrigerator for 30 minutes.

Step 6

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

Step 7

Transfer the dough to a lightly floured surface and gently roll it out to ½ inch thickness. Use the Mickey Mouse cookie cutter to cut the cookies into Mickey shapes. If needed, press the leftover back together to create a new marble pattern and gently re-roll it.

Step 8

Place the cookies on the prepared baking sheet and chill in the refrigerator for 15 minutes.

Step 9

Bake the cookies for 8-10 minutes or until the edges of the cookies are just starting to brown. Let the cookies cool on the baking sheet for 2 minutes before transferring to a wire rack to cool completely.