Lemon Brownies (One Bowl, No Mixer!)

Ingredients

• 1/2 cup butter (unsalted)
• 1 (4oz.) white chocolate bar (I used Ghirardelli)
• 3/4 cup granulated sugar
• 2 Tbsp. lemon zest (I used 2 large lemons)
• 2 large eggs (room temperature)
• 1 large egg yolk (room temperature )
• 1 tsp. lemon extract
• 1 tsp. vanilla extract
• 1 cup + 2 Tbsp. all-purpose flour (spooned and leveled )
• 1/2 tsp. salt
• 1/8 tsp. baking powder
• 2 Tbsp. fresh lemon juice
• 1 cup powdered sugar