Step 1: Preheat your oven to 350°F (175°C).
Step 2: Lightly grease your 9x9-inch baking pan or line it with parchment paper.
Step 3: In a medium bowl, combine the all-purpose flour, sugar, baking powder, baking soda, and salt. Add the melted butter and eggs, stirring until a dough forms. Press evenly into the bottom of the prepared pan.
Step 4: Bake for 10-12 minutes, or until lightly golden. Let it cool slightly.
Step 5: In a large mixing bowl, beat the cream cheese until smooth. Gradually add powdered sugar, then vanilla extract, and mix well. Beat in the eggs until creamy.
Step 6: Gently fold in the peanut butter until fully combined.
Step 7: Stir in the chopped Reese's, chocolate chips, and peanut butter chips.
Step 8: Pour the cheesecake filling over the crust and smooth it out.
Step 9: Bake for an additional 25-30 minutes, or until set and slightly golden.
Step 10: Allow to cool, then chill in the refrigerator for at least 2 hours before slicing.