Easy Meltaway Brownie Cookies (Ready in 30 Minutes) - My Home Made Recipe

Ingredients

• 1 cup (225 g) unsalted butter, softened
• 3/4 cup (90 g) powdered sugar
• 1 large egg yolk
• 1 teaspoon vanilla extract
• 2 oz (55 g) dark chocolate, melted and cooled
• 1/2 cup (45 g) unsweetened cocoa powder
• 1 3/4 cups (220 g) all-purpose flour
• 1/2 cup (60 g) cornstarch
• 1/2 teaspoon baking powder
• 1/4 teaspoon salt
• 1/2 cup (60 g) powdered sugar