In a large mixing bowl, combine the strawberry cake mix, melted butter, and egg. Stir until smooth and consistent. Add softened cream cheese and mix until thick and well-blended.

Cover the dough with plastic wrap and refrigerate for at least 1 hour to prevent spreading.

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

Scoop out tablespoon-sized portions and roll in sugar if desired, then place on baking sheets spaced 2 inches apart.

Bake for 8-10 minutes, until edges are set but centers still look soft. Avoid overbaking.

After baking, let cookies sit for 1-2 minutes, then gently press a chocolate kiss into the center of each cookie.