Preheat oven to 350°F. Line a 12-cup standard-size muffin pan with paper or foil muffin liners.

Stir together graham cracker crumbs, butter, sugar, and salt in a bowl. Spoon a heaping tablespoon and half into each muffin liner. Use a 1/4 cup measuring cup or your fingers to press mixture evenly on bottom of liner. Bake crusts just until lightly golden, about 5 minutes. Let cool on wire racks.

While the crusts cool, prepare the Pumpkin Cheesecake Filling: Beat cream cheese and pumpkin puree in bowl of a stand mixer fitted with a paddle attachment on medium speed until smooth, about 2 minutes, scraping down sides of bowl as needed. Add sugar and vanilla, and continue beating on medium speed just until combined. Add eggs, 1 at a time, beating just until incorporated after each addition. Add cinnamon, ginger, and nutmeg, and beat just until combined, about 30 seconds. (Do not overbeat.)

Pour cheesecake batter evenly over each crusts, filling about three-fourths full. Jiggle muffin pan to smooth tops of batter. Bake in preheated oven until top of cheesecake is dry to the touch and slightly jiggles in the center, 10 to 12 minutes. Transfer cheesecakes to wire racks, and let cool, about 20 minutes. Remove from pan, and place on serving platter. Refrigerate until completely cool, about 1 hour.

Meanwhile, prepare the Maple Whipped Cream: Beat heavy cream, powdered sugar, and maple syrup in bowl of a stand mixer fitted with a stand mixer on medium-high speed until stiff peaks form, 3 to 4 minutes. Transfer whipped cream to a piping bag fitted with a star tip. Pipe whipped cream on each cheesecake; sprinkle with pumpkin pie spice. Serve immediately or refrigerate until ready to serve.