• Pit and cut the nectarines and plums into about 1/2-inch slices. Place them in a mixing bowl. Add sugar, flour, nutmeg, and cardamom. Gently toss to coat the fruit pieces. Set aside
  
• Preheat oven to 400 F (200 C) for conventional oven, 380 F (190 C) for convection oven

Prepare the crust:

• Melt the butter over low-medium heat and let it cool down before using
  
• Combine flour, salt, sugar, and baking powder in a mixing bowl. Add the melted butter and milk. Use a chopstick or a fork to stir the ingredients.
  
• It should form some crumbly mixture
  
• When you squeeze the mixture together, it holds its shape.
  
• Use your hands to push all the ingredients together to form a rough dough
  

Shape the dough:

• Transfer this dough to the center of a piece of parchment paper, the size of the parchment paper is about the size of your baking pan. Shape the dough into a disc shape.
  
• Place another sheet of parchment paper on top. Use a rolling pin to roll the dough out to about 1/4-inch thick and round in shape. It doesn't have to be a perfect round
  
• Transfer the shaped dough along with the parchment paper to a baking sheet. Peel off the top parchment paper
  

Assembling:

• Pile the plum and nectarine mixture to the center of the dough, leaving 2 inches along the edge.
  
• Very gently fold the edges up and kind of squeeze the folds together to form some "crimps". The dough may feel crackly a bit, but don't worry. It's meant to be like that.
  
• 
• Brush them with some milk and sprinkle it with turbinado sugar. Refrigerate the assembled pie in the fridge for 30 minutes. Cold pie crust gives you a flaky texture
  

Baking:

• Place the baking sheet in the middle rack and bake for 45-50 minutes. Rotate the pan halfway through baking. The filling should be bubbling and the edges of the crust are nicely golden brown.

Serving:

• Remove from the oven and let them cool down for at least 20-30 minutes before slicing. You can serve them warm, cold or room-temperature
• You can serve it as is or with a dollop of whipped cream or ice cream