Creating Raspberry Custard Buns is a straightforward process that includes making the dough, preparing the custard filling, and assembling the buns. Follow these easy steps:

1. Prepare the Yeast: In a small bowl, combine warm milk and yeast. Let it sit for about 5 minutes until frothy.
2. Mix Dry Ingredients: In a large bowl, whisk together flour, sugar, and salt.
3. Combine Ingredients: Add softened butter, egg, and the yeast mixture to the dry ingredients. Mix until a dough begins to form.
4. Knead the Dough: Transfer the dough to a lightly floured surface and knead for about 5-7 minutes until smooth.
5. First Rise: Place the kneaded dough in a greased bowl, cover it with a kitchen towel, and let it rise in a warm spot for about 1 hour or until doubled in size.
6. Prepare the Filling: While the dough rises, mix the raspberries, pastry cream, and vanilla extract in a bowl. Set aside.
7. Shape the Buns: After the dough has risen, punch it down and roll it out to 1/2 inch thickness. Cut out circles using a cookie cutter.
8. Add Filling: Place a spoonful of the raspberry mixture in the center of each circle. Fold the dough over and pinch the edges to seal.
9. Second Rise: Place the buns on a baking sheet lined with parchment paper. Cover and let them rise for another 30 minutes.
10. Preheat Oven: While the buns rise, preheat your oven to 375°F (190°C).
11. Bake: Bake the buns in the preheated oven for 20-25 minutes or until golden brown.
12. Cool Down: Remove from the oven and allow them to cool for about 15 minutes.
13. Dust with Sugar: For the final touch, dust the warm buns with powdered sugar before serving.

Following these steps will guide you in creating these sweet, fruity treats effortlessly.