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Keto Raspberry Swirl Cheesecake - Creamy, Low-Carb, and Gorgeous

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Prep Time 20 minutes
Cook Time 1 hour
Total Time 1 hour 20 minutes
Servings: 12 servings
Ingredients Method

Ingredients
  

  • For the crust: 1 1/2 cups almond flour
  • 3 tablespoons granulated erythritol or allulose
  • 1/4 teaspoon fine sea salt
  • 1/3 cup unsalted butter, melted
  • 1/2 teaspoon vanilla extract
  • For the raspberry swirl: 1 1/2 cups raspberries (fresh or frozen)
  • 2–3 tablespoons powdered erythritol or allulose (to taste)
  • 1 teaspoon lemon juice
  • 1/2 teaspoon vanilla extract
  • For the cheesecake filling: 24 ounces full-fat cream cheese, softened
  • 3/4 cup powdered erythritol or allulose
  • 1/2 cup sour cream, room temperature
  • 3 large eggs, room temperature
  • 1 1/2 teaspoons vanilla extract
  • 1/4 teaspoon fine sea salt
  • Optional: 1 teaspoon lemon zest for brightness
  • Equipment: 9-inch springform pan
  • Heavy-duty aluminum foil (for water bath)
  • Deep roasting pan
  • Hand mixer or stand mixer
  • Fine-mesh strainer (optional, for seedless raspberry sauce)

Method
 

  1. Prep the pan and oven. Preheat the oven to 325°F (165°C). Wrap the outside of a 9-inch springform pan with two layers of foil to keep water out during baking. Lightly grease the inside.
  2. Make the crust. In a bowl, combine almond flour, sweetener, salt, melted butter, and vanilla. Stir until the mixture looks like damp sand. Press it evenly into the bottom of the pan. Bake for 10–12 minutes, until lightly golden. Cool slightly.
  3. Cook the raspberry swirl. In a small saucepan, add raspberries, sweetener, lemon juice, and vanilla. Simmer over medium heat for 5–7 minutes, mashing the berries, until thickened and jammy. Taste and adjust sweetness. For a smoother swirl, press through a fine-mesh strainer to remove seeds. Cool to lukewarm.
  4. Beat the cream cheese. In a large bowl, beat softened cream cheese and powdered sweetener on medium speed for 2–3 minutes until very smooth and fluffy. Scrape the bowl well.
  5. Add sour cream and flavorings. Mix in sour cream, vanilla, salt, and optional lemon zest just until blended. Avoid overbeating.
  6. Add the eggs. Beat in eggs one at a time on low speed, mixing just until incorporated and smooth. Overmixing can add air and cause cracks.
  7. Assemble the cheesecake. Pour the filling over the crust and smooth the top. Dollop spoonfuls of raspberry sauce all over the surface. Use a thin knife or skewer to gently swirl, creating ribbons without overmixing.
  8. Set up the water bath. Place the foil-wrapped pan in a large roasting pan. Pour hot water into the roasting pan until it reaches halfway up the sides of the springform. This gentle heat keeps the cheesecake creamy and prevents cracks.
  9. Bake. Bake at 325°F for 55–70 minutes. The edges should be set, and the center should still have a slight wobble, like gelatin. If the top browns too fast, tent loosely with foil.
  10. Cool gradually. Turn off the oven, crack the door, and let the cheesecake sit for 45 minutes. Remove from the water bath, unwrap the foil, and cool on a rack until room temperature.
  11. Chill and set. Cover and refrigerate for at least 6 hours, preferably overnight. This step is essential for the perfect texture and clean slices.
  12. Serve. Release the springform, run a thin knife around the edge, and slice with a hot, clean knife. Add a few fresh raspberries or a dollop of whipped cream if you like.