Step 1: Preheat Oven: Preheat the oven to 375F (190C). Prepare a baking sheet by lining it with parchment paper or a silicone baking mat. This step ensures the cookies bake evenly and prevents sticking.
Step 2: Combine Wet Ingredients: In a large bowl, mix the melted butter and eggs until well combined. Ensure the butter has cooled slightly before adding the eggs to prevent them from cooking. The mixture should be smooth and homogenous.
Step 3: Add Cake Mix: Pour the cake mix into the bowl with the wet ingredients. Mix until just combined. Avoid overmixing, as this can result in tougher cookies. The batter will be thick.
Step 4: Stir in Chocolate Chips: Add the chocolate chips and vanilla extract (if using) to the batter. Gently fold them in until evenly distributed throughout the dough. Ensure an even distribution for consistent flavor in each cookie.
Step 5: Drop onto Baking Sheet: Drop rounded tablespoons of dough onto the prepared baking sheet, leaving about 2 inches between each cookie. Use a cookie scoop for uniform sizes. These cookies spread slightly while baking.
Step 6: Bake: Bake for 10-12 minutes, or until the edges are golden brown and the centers are set. Baking time may vary depending on the oven. Avoid overbaking to maintain a soft texture.
Step 7: Cool and Serve: Let the cookies cool on the baking sheet for a few minutes before transferring them to a wire rack to cool completely. Serve warm or at room temperature. Cooling on a wire rack prevents the bottoms from becoming soggy.
Tips: For a richer flavor, use browned butter instead of melted butter. Substitute different types of chocolate chips or add nuts, sprinkles, or other mix-ins for variations.