01 -
Blend blueberries until smooth.
02 -
Pour the blueberry puree into a saucepan on medium-low heat. Gently simmer, stirring constantly until it reduces to about 1/2 cup. Remove from heat and let the reduction cool. Set aside.
03 -
Preheat oven to 325°F (163°C). Line an 8x8 glass baking dish with parchment paper. Set aside.
04 -
In a medium bowl, combine melted butter and sugar. Stir in eggs, vanilla extract, and salt until well combined. Fold in the cooled blueberry reduction.
05 -
Gradually add flour to the wet mixture, stirring until just combined.
06 -
Pour the batter into the prepared baking dish, spreading it evenly. Bake on the middle rack for 35-40 minutes, checking at the 30-minute mark. Bake until the center is set, and a toothpick inserted in the center comes out clean or with a few crumbs.
07 -
Mix the glaze ingredients until smooth and silky. Spread half the glaze evenly over the completely cooled brownies. Once hardened, spread on the remaining glaze and allow it to harden.
08 -
Cut the brownies into 16 squares. Keep any leftover brownies in an airtight container.