Prep the Crust:
Preheat your oven to 325°F (160°C).In a medium bowl, whisk together the pumpkin seed meal, cocoa powder, and powdered sweetener.
Stir in the melted butter until everything is well combined and crumbly.
Press this mixture firmly into the bottom of a 9-inch springform pan.
Bake for 10 to 12 minutes, then take it out and lower your oven temperature to 300°F (150°C).
Make the Silky Filling:
In a small microwave-safe bowl, combine the chocolate chips and 1 tablespoon of butter. Heat in 30-second bursts, stirring until totally smooth. Let it cool a bit.In a large bowl, beat the softened cream cheese on medium speed for 1-2 minutes until it's super creamy and lump-free.
Beat in your granular sweetener and vanilla extract until just combined.
Now, beat in 1/3 cup of the heavy whipping cream. Give it a taste and adjust sweetness if you like!
Gently beat in the eggs, one at a time, just until they're mixed in. Scrape down the bowl and beaters as you go.
Create the Marble Swirl:
Transfer about one-third of your vanilla batter into a separate bowl.Stir the cooled melted chocolate mixture into this smaller bowl of batter until it's beautifully combined.
Beat in the remaining heavy cream (about 1/6 cup or 2-3 tablespoons) into the chocolate batter to make it a bit thinner and easier to swirl.
Now for the fun part! Alternate dropping spoonfuls of vanilla and chocolate batter into your crust-lined pan. Try to make the chocolate scoops slightly smaller.
Gently swirl the batters together with a knife or offset spatula to create pretty marble patterns.
Lightly shake the pan to even out the top.
Bake and Chill to Perfection:
Place the cheesecake in the oven and bake at 300°F (150°C) for 10 minutes.Then, reduce the temperature to 250°F (120°C) and continue baking for another 60 to 70 minutes. The center should still jiggle slightly when you gently shake the pan.
Turn off the oven, prop the door open with a wooden spoon, and let the cheesecake hang out inside for another hour. This helps prevent cracks!
Transfer the cheesecake to a wire rack to cool completely at room temperature.
Once cool, refrigerate it for at least 2-3 hours (or overnight) until it's perfectly firm and ready to slice.