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Creamy Custard Keto Cheesecake: Ultra-Smooth, Low-Carb & Sugar-Free


  • Author: WAFA LI

Ingredients

Scale

For the crust:

  • 1½ cups (150g) almond flour
  • 3 tbsp granulated keto sweetener (e.g., monk fruit blend)
  • ¼ tsp cinnamon (optional)
  • 3 tbsp unsalted butter, melted
  • Pinch of salt

For the custard cheesecake filling:

  • 24 oz (680g) full-fat cream cheese, softened
  • ¾ cup (150g) granulated keto sweetener
  • 4 large eggs
  • ½ cup (120ml) heavy cream
  • 2 tbsp sour cream or full-fat coconut cream
  • 1 tbsp vanilla extract
  • 1 tsp lemon juice (balances richness)
  • Optional: ½ tsp unflavored gelatin (for extra stability)

For garnish (optional):

  • Whipped cream (sweetened with keto sweetener)
  • Fresh berries (raspberries or blackberries—use sparingly for low-carb)
  • Lemon zest

Instructions

  1. Preheat oven to 325°F (165°C). Grease a 9″ springform pan; line bottom with parchment.
  2. Make crust: Mix almond flour, sweetener, cinnamon, and salt. Stir in melted butter until crumbly. Press firmly into bottom of pan. Bake 8–10 minutes until fragrant. Cool.
  3. Make filling: In a stand mixer, beat cream cheese and sweetener until smooth (~3 min). Add eggs one at a time, mixing just until incorporated.
    Do not overmix—this prevents cracks!
    Stir in heavy cream, sour cream, vanilla, and lemon juice. For extra silkiness, blend 10 sec with immersion blender.
  4. Bake: Pour filling over cooled crust. Tap pan to release air bubbles.
    • Bake 45–55 minutes until edges are set but center slightly jiggles.
    • Turn off oven; crack door open with a wooden spoon. Let cool inside 1 hour to prevent sinking.
  5. Chill: Refrigerate at least 6 hours, preferably overnight.
  6. Serve: Garnish with keto whipped cream and a few berries if desired.

Prep Time & Nutrition (per slice, serves 12):

Prep Time: 20 min | Cook Time: 55 min (+ cooling & chilling) | Total Time: 7+ hr | Servings: 12 | Calories: 320 | Net Carbs: 3g | Fats: 30g | Protein: 8g