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

In a medium bowl, whisk together 2 cups of all-purpose flour and 1 teaspoon of baking soda until well combined.

In a large mixing bowl, cream together 1 cup of softened unsalted butter, ½ cup of granulated sugar, and ½ cup of brown sugar.

Add in 2 large eggs and 1 teaspoon of vanilla extract, beating until smooth.

Gradually add the dry flour mixture to the wet ingredients, mixing on low speed until just combined.

Gently fold in 1 cup of colorful candy crystals or rock candy.

Portion out the dough onto the prepared baking sheets, spacing about 2 inches apart, and bake for 10-12 minutes.

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