01 -
Preheat oven to 350°F and lightly grease an 8-inch square baking pan.
02 -
In a medium bowl, whisk together flour, baking powder, baking soda, salt, and pumpkin pie spice until evenly distributed.
03 -
In a large bowl, beat softened butter and brown sugar until light and fluffy, about 2 to 3 minutes.
04 -
Add eggs one at a time, beating well after each addition. Mix in pumpkin purée, Greek yogurt, and vanilla extract until smooth.
05 -
Gradually fold dry ingredients into wet mixture until just combined to avoid over-mixing.
06 -
Pour batter into prepared pan and smooth the surface. Bake for 28 to 32 minutes until a toothpick inserted in center comes out clean or with moist crumbs.
07 -
Allow cake to cool in pan for 10 minutes, then transfer to a wire rack to cool completely.
08 -
Whisk powdered sugar, milk, and vanilla extract in a small bowl until smooth and pourable. Adjust consistency with extra milk if necessary.
09 -
Drizzle glaze over cooled cake and let set for 10 minutes before slicing. Serve warm or at room temperature.