Combine flour, sugar, milk, and olive oil in a ziplock bag and mix well.

Flatten the dough inside the ziplock bag using a rolling pin.

Fold the edges of the dough inward to form a tart shape. Use a fork to create patterns on the tart.

Bake the tart dough in a preheated oven at 180°C for 25 minutes.

In a microwave-safe bowl, mix egg yolk, sugar, flour, vanilla essence, and milk.

Cover the bowl with plastic wrap and microwave at 600W for 1 minute. Stir well and microwave for another minute.