In a medium bowl, whisk together the cake mix, egg, melted butter, water, and vanilla extract until well combined and smooth. Divide between 4 silicone muffin cups.
Place the muffin cups in an air fryer and bake at 300F for 12 to 15 minutes, until the tops are set. Remove and let cool.
In a medium bowl, beat the butter until lightened and fluffy. Beat in the sweetener until well combined. Drizzle in the cream and beat until the frosting is a spreadable consistency. Beat in the vanilla and food coloring, if using.
Pipe or spread on the cooled cupcakes.
Serving Size 1
|Total Fat 28g|
|Total Saturated Fat 15g|
|Total Carbs 34g|
|Dietary Fiber 4g|
|Added Sugar 0g|
|Net Carbs: 2g|