Creating Peach Pie Cruffins can be straightforward if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 375°F (190°C) and prepare a muffin tin by greasing it or lining it with paper liners.
2. Make the Filling: In a medium bowl, combine the diced peaches, cornstarch, cinnamon, nutmeg, and brown sugar. Toss until well mixed and set aside.
3. Prepare the Dough: In a large mixing bowl, combine the flour, granulated sugar, salt, baking powder, and baking soda. Mix well.
4. Cut in Butter: Add the cold, cubed butter to the dry ingredients. Using a pastry cutter or your fingers, mix until the mixture resembles coarse crumbs.
5. Add Wet Ingredients: Stir in the buttermilk and vanilla extract. Mix until just combined, being careful not to overwork the dough.
6. Roll the Dough: On a lightly floured surface, roll out the dough into a rectangle, about 1/2 inch thick.
7. Layer the Filling: Spread the peach filling evenly over the dough, leaving a small border around the edges.
8. Fold and Cut: Starting from one long side, roll the dough tightly into a log. Slice the log into 12 equal pieces.
9. Form the Cruffins: Take each piece and twist it, placing it upright into each muffin cup.
10. Egg Wash: Beat the egg and brush it over the tops of the cruffins for a golden finish.
11. Bake: Place the muffin tin in the preheated oven and bake for 25-30 minutes or until golden brown and cooked through.
12. Cool: Remove from the oven and let them cool in the pan for about 15 minutes before transferring them to a wire rack to cool completely.
13. Dust with Powdered Sugar: For a final touch, dust the tops with powdered sugar before serving.

These steps will guide you in creating these incredible cruffins effortlessly.