01 - Preheat oven to 350°F. Line two baking sheets with parchment paper and set aside.
02 - In a medium bowl, whisk together the all-purpose flour, baking soda, and salt until evenly blended. Set aside.
03 - In a large mixing bowl, beat the softened unsalted butter, granulated sugar, and packed brown sugar using an electric mixer until the mixture is pale, light, and fluffy.
04 - Add the large egg and vanilla extract to the creamed butter mixture. Beat until fully combined and smooth.
05 - Gradually add the dry ingredient mixture to the wet ingredients, mixing on low speed until a soft, cohesive dough forms. Avoid overmixing.
06 - Gently fold the semi-sweet chocolate chips and chopped maraschino cherries into the dough using a spatula until evenly distributed.
07 - Drop heaping tablespoons of dough onto the prepared baking sheets, spacing each portion approximately 2 inches apart to allow for spreading.
08 - Bake for 10 to 12 minutes, rotating the sheets halfway through, until the edges are lightly golden and the centers appear just set.
09 - Allow the cookies to rest on the baking sheets for 5 minutes, then transfer them to a wire cooling rack to cool completely before serving or storing.