Easy Sugar-Free Low Carb Keto Lemon Curd Parfait - Sugar-Free Mom

Ingredients

• 1 large egg
• 2 ounces Swerve confectioners sweetener
• 1/2 tsp lemon liquid stevia
• 2 tbsp lemon juice (from fresh lemons is best)
• 1 tsp lemon zest
• 2.5 ounces butter (cut into squares)
• 1 teaspoon heavy cream
• 4 ounces mascarpone cheese
• 1/2 tsp vanilla liquid stevia
• 1/2 tsp vanilla extract
• 1/4 cup heavy cream
• 1/2 cup blueberries (optional)