Follow these simple steps to create your Biscoff Lava Cookie Cups:

1. Preheat Your Oven: Preheat your oven to 350°F (175°C) and grease a muffin tin or line it with cupcake liners.
2. Prepare the Cookie Crust: In a medium bowl, mix the Biscoff cookie crumbs and melted butter until combined. Press the mixture firmly into the bottom of each muffin cup to form a crust.
3. Mix Dry Ingredients: In another bowl, whisk together the flour, baking soda, and salt until well combined.
4. Combine Wet Ingredients: In a large mixing bowl, beat the egg, brown sugar, granulated sugar, and vanilla extract until smooth and creamy.
5. Combine Mixtures: Gradually add the dry ingredients to the wet ingredients, mixing until just combined. Do not overmix.
6. Add Chocolate Chips: Fold in the chocolate chips gently, ensuring they are evenly distributed throughout the batter.
7. Fill the Cups: Spoon the batter on top of the Biscoff crust in each muffin cup, filling them about ¾ full.
8. Bake: Place the muffin tin in your preheated oven and bake for 12-15 minutes, or until the tops are golden and set but still slightly soft in the center.
9. Cool: Remove the muffin tin from the oven and let the cookie cups cool for 5-10 minutes before carefully removing them.
10. Serve Warm: For the best experience, serve the cookie cups warm so the chocolate center is still gooey.