Creating these Creamy Lemon Cheesecake Crumb Bars is straightforward. Simply follow these steps for delicious results:

1. Preheat the Oven: Preheat your oven to 325°F (163°C) and grease an 8×8-inch baking pan.

2. Make the Crust: In a medium bowl, combine the graham cracker crumbs, sugar, and melted butter. Mix until well combined.

3. Press into Pan: Press the crumb mixture firmly into the bottom of the prepared pan to form an even layer.

4. Bake the Crust: Bake in the preheated oven for about 10 minutes. Remove and let it cool slightly while preparing the filling.

5. Prepare the Filling: In a large bowl, beat the softened cream cheese with an electric mixer until smooth.

6. Add Sugar and Eggs: Gradually add the sugar, mixing until combined. Then, add the eggs one at a time, mixing well after each addition.

7. Incorporate Additional Ingredients: Mix in the sour cream, lemon juice, lemon zest, and vanilla extract until smooth and creamy.

8. Pour the Filling: Pour the cheesecake filling over the prepared crust, spreading it evenly.

9. Bake: Return the pan to the oven and bake for 30-35 minutes, or until the center is set but still slightly jiggly.

10. Cool: Remove the cheesecake bars from the oven and allow them to cool at room temperature for about 30 minutes.

11. Chill: Once cooled, place the bars in the refrigerator and chill for at least 2 hours before slicing.

12. Slice and Serve: Use a sharp knife to cut the bars into squares. Serve plain or top with whipped cream and decorative lemon slices if desired.

These simple steps will lead you to create your very own Creamy Lemon Cheesecake Crumb Bars that will impress everyone around you!