Apple Brown Butter Blondies

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Nonstick cooking spray, for the baking pan

1 large tart baking apple, such as Granny Smith, peeled and diced, about 1 1/4 cups 

14 tablespoons unsalted butter 

3/4 teaspoon ground cinnamon 

1/4 teaspoon ground clove 

3/4 teaspoon fine salt 

1/2 teaspoon baking powder 

1 1/2 cups light brown sugar 

1 tablespoon vanilla extract 

1 large egg plus 1 egg yolk 

1 2/3 cups all-purpose flour 

1 cup chopped toasted pecans