Keto-friendly Mini Cheesecake Cups

Crust: 2 tbsp butter melted 1 dash salt ½ cup almond flour 1 tbsp granulated erythritol

Filling: 8 ounces cream cheese softened 1 egg 1 tsp vanilla ¼ cup granulated erythritol 1 tsp lemon juice 15 drops liquid stevia