Blackberry-Peach Cobbler Bars

INGREDIENTS

1 cup

butter, softened

1 cup

firmly packed light brown sugar

1 1/2 cups

granulated sugar, divided

large eggs

1 tbsp

vanilla extract

1 tsp

baking powder

3/4 tsp

table salt

3 1/4 cups

all-purpose flour, divided

3 6 ounce packages

fresh blackberries (about 4 cups)

4 cups

peeled and sliced fresh firm, ripe peaches

3 tbsp

bourbon

1 cup

roasted glazed pecan pieces