Kue Kepingan Coklat Mentega Coklat

Bahan-bahan (24 porsi)

• 1 cup unsalted butter
• 2 1/4 cups all-purpose flour
• 1 1/4 teaspoon baking soda
• 1/2 teaspoon coarse sea salt
• 1 cup light brown sugar
• 1/2 cup granulated sugar
• 1 large egg
• 1 egg yolk
• 2 1/2 teaspoon vanilla extract
• 1 Tablespoon plain yogurt (I used Greek yogurt)
• 1 cup semisweet chocolate chips (I used jumbo)