Boston Cream Pie

Pastry Cream: (make this first and let it chill while making the other parts)
1 1/4 cups whipping cream
3 egg yolks
1/4 cup granulated erythritol
pinch salt
1 tbsp cornstarch
2 tbsp butter, cut into two pieces
1 1/2 tsp vanilla extract
16 drops stevia extract

Cake:
2 cups almond flour
1/4 cup granulated erythritol
1/4 cup whey protein powder
1 tsp xanthan gum
2 tsp baking powder
1/2 tsp baking soda
1/2 tsp salt
6 oz greek yogurt
1/4 cup butter, softened
3 large eggs
1/2 tsp vanilla extract
10 drops stevia extract
1/4 cup almond milk

Chocolate Glaze:
5 tbsp butter
2 oz unsweetened chocolate, chopped
2 tbsp powdered erythritol or xylitol
1/4 cup cocoa powder
1/4 tsp vanilla extract
16 drops stevia extract