Measure out and prepare all of the ingredients. Preheat oven to 325F.

Make the muffins by combining almond flour, erythritol, protein powder, baking powder, cinnamon, and salt.

Whisk to combine all of the ingredients together.

Add the unsweetened almond milk, melted butter, vanilla extract, and eggs.

Whisk to combine all of this together.

Line a muffin pan with muffin liners and pour the muffin mixture into the liners.

Create the crumble by combining the almond flour, erythritol, protein powder, and cinnamon. Whisk to combine.

Add in the melted butter.

Whisk until the mixture begins to get crumbly.

Sprinkle this crumble evenly on top of the muffins. Bake in the oven for about 30 minutes or until a toothpick inserted comes out clean. Let cool completely.

Make the drizzle by combining powdered erythritol, heavy cream, and vanilla extract into a bowl. Whisk to combine well.

Using a spoon, drizzle the sauce over top of the muffins.

Serve and enjoy!