Preheat your oven to 350 degrees
Grease a 9”x13” baking dish and line with parchment paper
In a large bowl, combine 2 cups of brown sugar into a cup of melted butter until fully combined
Whisk in 1/3 cup of pure maple syrup, 2 large eggs, 2 large egg yolks and a teaspoon of pure vanilla extract and a teaspoon of maple extract
Add 2 cups of all purpose flour, 1 teaspoon of ground cinnamon, 1/2 teaspoon of ground ginger, 1/2 teaspoon of nutmeg, 1/4 teaspoon of cloves, 1/4 teaspoon of cardamom, 2 teaspoons of baking powder and 1 teaspoon of salt and mix until just combined
Transfer the batter into your prepared baking dish
Optionally top with some course sugar
Bake in a 350 degree oven for 35-40 minutes or until a toothpick will come out of the center clean
Allow the blondies to cool a bit before transferring out of the baking dish
Store leftovers in an airtight container at room temperature for up to 4 days