The BEST Keto Key Lime Pie (without cream cheese)

Ingredients

• 3 tablespoons unsalted butter
• 1/2 cup powdered sugar-free sweetener
• 16 oz (2 cups) heavy whipping cream
• 4 teaspoons lime zest
• 4 egg yolks
• 1/2 cup lime juice (from 4 limes or 20 key limes)
• 1 cup almond flour
• 3 tablespoons coconut flour
• 1 teaspoon xanthan gum
• 1/2 teaspoon salt
• 1/2 cup unsalted butter, chilled and cubed
• 1 ounce cream cheese, softened
• 1 egg
• 1 1/2 teaspoons rice vinegar or apple cider vinegar
• 1/2 cup heavy whipping cream
• 2 tablespoons powdered sugar-free sweetener