Mix 20g almond flour, 20g roasted soybean flour (or just add more almond flour if you don't have soybean flour), one spoonful of powdered allulose, and a pinch of salt together.
Pile the mixture into chunks on a baking tray and bake in a preheated oven at 170°C for 10 minutes to create a scone-like crumble.
Combine 100g thick Greek yogurt, 1 egg yolk, and two spoonfuls of allulose. Mix to make an easy custard pudding.
Layer crumble-custard-crumble in a cup and enjoy!