1-First Step: Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper or silicone mats. This prevents sticking and ensures even baking. Clear counter space for mixing; have a cookie scoop or spoon ready. Measure all ingredients ahead for smooth sailing this mise en place keeps things efficient for beginners.

2-Second Step: In a large bowl, combine the cake mix, eggs, vegetable oil, vanilla extract, and Biscoff cookie butter. Stir with a wooden spoon or spatula until a thick dough forms, about 1-2 minutes. The mixture will be sticky resist adding flour. Fold in white chocolate chips if using. Taste a tiny bit; adjust with a pinch more spread for bolder flavor.

3-Third Step: Scoop 1.5-tablespoon portions of dough, roll into balls, and place 2 inches apart on sheets. For biscoff stuffed cookies, press a thumbprint into each ball and fill with 1 tsp extra cookie butter, then seal. Flatten slightly with your palm. Sprinkle sea salt on top. Chill sheets for 10 minutes in the fridge if dough softens this firms up for perfect spread.

4-Fourth Step: Bake one sheet at a time for 10-12 minutes, until edges are golden but centers look soft. Cookies firm as they cool do not overbake for that gooey center. Rotate sheets halfway for even heat. Total bake time per batch: 12 minutes.

5-Final Step: Cool cookies on sheets for 5 minutes, then transfer to a wire rack. They taste best warm, with melty spread oozing out. Store extras airtight. Pair with milk, tea, or ice cream for party hosts. Yields 24; double for crowds.