Preheat the oven to 350°F (175°C).
Line a muffin pan with liners.
In a mixing bowl, cream butter, powdered sweetener, and vanilla until smooth.
Add eggs and heavy cream to the mixture.
Beat until fully combined.
In a separate bowl, whisk together almond flour, psyllium husk, baking powder, nutmeg, ginger, and allspice.
Gradually add the dry ingredients to the wet mixture.
Mix until a thick batter forms.
Divide the batter evenly into the muffin cups.
Bake for 18–20 minutes until muffins are golden and set.
Remove from the oven and allow them to cool completely.
Brush each muffin with melted butter.
Roll the muffins in the cinnamon-sweetener mixture.
Serve immediately or store for later.