Prepare the springform pan by lining the bottom with parchment paper and brushing the sides with coconut oil or spraying with non-stick spray.
Wrap the bottom of the pan in aluminum foil to prevent water seepage during the water bath.
In a large bowl, cream Neufchâtel cheese using a whisk or stand mixer on low speed.
Add eggs one at a time, mixing after each addition.
Mix in Greek yogurt, pumpkin puree, and vanilla extract until well combined.
Add whey protein powder, stevia, and pumpkin pie spice to the batter.
If there are visible air bubbles, gently tap the bowl on the counter.
This helps eliminate the air bubbles, which can affect the cheesecake texture.
Pour the mixture into the prepared pan, place it in the larger pan in the oven.
Add about 1 inch of water for the water bath, and bake at 325°F for 30 minutes.
Lower the oven to 200°F (93°C) and bake for an additional 65 minutes.
The cheesecake should be set around the edges with a slight jiggle in the center.
It should not brown at the edges.
For best results, do not open the oven door during baking.
Let the cheesecake cool at room temperature before refrigerating. It needs a few hours in the fridge to fully set.
Refrigerate for several hours or overnight.
Remove from springform pan and serve.
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Notes
Ingredient SubstitutionsNeufchâtel: Regular cream cheese works just as well.Sweeteners: Usemonk fruit or erythritol if you prefer alternatives to stevia powder.
Pumpkin Spice: Substitute with a teaspoon of ground cinnamon.Whey Protein: Sub the unflavored whey protein powder with vanilla whey concentrate. Keep in mind, the cheesecake will have a bit of the protein powder flavor (so make sure it's a vanilla whey you like!).If you'd like to use a blend of whey and casein protein powder (like Quest or PEScience protein), texturally that will work but you'll need to lessen the bake time (start checking after 40 minutes instead of 65 minutes).I don't recommend using plant-based protein powders in cheesecake. Read more about the best protein powder for different baked goods.Recipe VariationsMini Cheesecakes: Use a cupcake tin lined with paper cupcake liners to create single-serve mini protein cheesecakes. Perfect for a mid-day snack!Pumpkin Keto Protein Cheesecake: While this recipe is already keto-friendly, you can add a homemade crust made with almond flour, melted butter and a touch of stevia powder.Chocolate Chip Pumpkin Cheesecake: Add sugar free dark chocolte chips to the cheesecake filling for a sweet tooth fix, and drizzle the top of the cheesecake with melted chips.Graham Cracker Crust: Instead of non-stick spray and parchment paper, use butter to grease the pan and then press graham cracker crumbs into the bottom and sides of the pan. Gluten free graham crackers work as well as traditional, and you can use a food processor to easily make the graham crackers into fine crumbs.
Storage InfoStore the cheesecake in an airtight container to maintain freshness. It can last up to five days in the refrigerator or up to a month in the freezer. If freezing, slice first and wrap slices individually in plastic wrap and then store in the airtight container.