Step 1: Preheat your oven to 350°F (175°C) and line an 8x8 inch baking pan with parchment paper.

Step 2: In a medium bowl, mix graham cracker crumbs, 1/4 cup sugar, and melted butter until well combined.

Step 3: Press the crumb mixture firmly into the bottom of the prepared pan to form the crust.

Step 4: In a large bowl, beat the cream cheese and 3/4 cup sugar until smooth. Add eggs one at a time, mixing well after each addition.

Step 5: Stir in vanilla extract and sour cream until fully incorporated.

Step 6: Pour the cream cheese mixture over the crust and spread it evenly.

Step 7: Bake for 35 minutes or until the center is set. Let cool completely in the pan.

Step 8: Refrigerate for at least 2 hours before slicing. Dust with powdered sugar before serving.