Preheat your oven to 350°F (175°C). In a medium bowl, whisk together flour, baking soda, and salt.

In a large mixing bowl, cream butter, granulated sugar, and brown sugar until light and fluffy. Incorporate eggs and vanilla extract.

Gradually add the flour mixture to the wet ingredients, mixing gently until just combined. Fold in chocolate chips and Easter M&Ms.

Divide the dough into three portions and add food coloring to each. Fold gently to create swirls.

Scoop tablespoon-sized balls of dough onto lined baking sheets, leaving space for spreading. Bake for 10-12 minutes.

Allow cookies to cool on the baking sheet for 5 minutes before transferring to a wire rack to cool completely.