01 -
Preheat oven to 350°F. Grease and flour a 9x13-inch baking pan or line with parchment paper.
02 -
In a large mixing bowl, whisk together flour, baking powder, baking soda, salt, nutmeg, and granulated sugar until fully combined.
03 -
In a separate bowl, whisk together melted butter, eggs, buttermilk, and vanilla extract until smooth.
04 -
Pour wet ingredients into the dry ingredients and mix gently until just combined, avoiding overmixing.
05 -
Spread batter evenly into the prepared baking pan using a spatula.
06 -
Bake for 20 to 25 minutes, or until a toothpick inserted in the center comes out clean and the edges are golden.
07 -
Let bars cool in the pan for about 10 minutes, then transfer to a wire rack to cool fully.
08 -
In a large bowl, sift powdered sugar. Whisk in maple syrup, milk, melted butter, vanilla extract, and a pinch of salt until smooth. Adjust consistency with additional milk if needed.
09 -
Once bars are completely cool, pour glaze evenly over the top, spreading gently as needed.
10 -
Immediately sprinkle with chopped pecans or walnuts if desired.
11 -
Let glazed bars rest for 30 to 60 minutes until the glaze is set.
12 -
Cut into bars or squares and present on a serving platter.