Vanilla Custard Cream
Whisk the egg yolks and stevia powder in a bowl until pale yellow.
Add the xanthan gum.
Mix well.
Bring the heavy cream to almost a simmer in a saucepan.
Add to the egg yolk mixture.
QUICKLY whisk to combine, and then transfer the mixture to the saucepan.
Keep stirring the mixture with a spatula over low - medium heat.
DON’T STOP!
When it starts to thicken, stir 20 - 30 more seconds.
(* It takes 3 - 4 minutes to thicken.)
Turn off the heat and stir 20 - 30 more seconds.
Add the vanilla extract and mix well.
(Strain the custard cream through a fine mesh sieve if necessary to make it smooth.) Pour the custard into a tray and level out.
Place a piece of cling wrap over the custard.
Stick the wrap to the custard by pressing lightly to prevent a film from forming on top of the custard.
Refrigerate for one hour or until cold.
Remove the custard from the fridge.
Remove the wrap carefully and transfer the custard to a bowl.
Cream the custard with a whisk.
* Add a little bit of heavy cream if too thick to cream it.
Place in a piping bag (optional).
Refrigerate while preparing the muffin batter.
Muffin Batter
Preheat the oven to 180 C / 350 F.
Grease your muffin tin or line with paper baking cups.
In a medium bowl, whisk together the dry ingredients.
In a large bowl, add the eggs, coconut oil, heavy cream and lemon juice and whisk well.
Add the dry ingredients and mix well.
Assembly
Spoon 1/16 of the batter into each muffin cup.
Pipe (or spoon) 1/16 of the custard on top of each (but do not pipe or spoon all the way to the edge).
Then, sprinkle 1/16 of the blueberries on top.
Repeat with the remaining batter, custard and blueberries.
(* You’ll have six layers: batter -> custard -> blueberries -> batter -> custard -> blueberries.)
Bake for 20 - 25 minutes.
Let cool on a wire rack.