Cover baking sheet with parchment paper or spray with non-stick cooking spray.
In a large bowl, whisk your flour, baking soda, baking powder, brown sugar, salt, and pumpkin pie spice together.
Dice your butter into cubes-keep refrigerated until ready to use. It is key for scones that you keep it very cold. “Cut” butter into flour either with a pastry cutter, in a food processor, or with 2 forks. This will take several minutes. The mix will look like cornmeal.
In a separate bowl combine; egg, vanilla extract, pumpkin puree, and milk until blended well.
Stir dry ingredients and wet ingredients together, until dough forms.
Place dough on a well -floured surface. Knead dough 3-4 times.
Roll dough into a rectangle about 8×11.
Cut dough in half, and half again. Then cut each rectangle into two triangles.
Transfer scones to parchment lined pan.
Bake 12-14 minutes , until edges begin to brown.
Place on wire rack to cool.
Once cool, you can make your glaze.
Sift powdered sugar into a bowl, add syrup. Add milk 1 Tbsp. at a time until glaze is fluid, but not runny.