Matcha Thumbprint Cookies with Chocolate and Walnuts Recipe | Valerie Bertinelli | Food Network

Ingredients

• About 32 intact walnut halves (have a few extra just in case you make more cookies)
• 2 cups all-purpose flour
• 3 tablespoons cornstarch
• 1 tablespoon matcha (green tea powder)
• 1/2 teaspoon kosher salt
• 1 cup (2 sticks) unsalted butter, at room temperature
• 1/3 cup light brown sugar
• 1/3 cup granulated sugar
• 1 teaspoon vanilla extract
• 1 large egg yolk
• 1 cup semisweet chocolate chips
• 3 tablespoons heavy cream
• 1 tablespoon unsalted butter, cut into pieces
• 1 1/2 teaspoons light corn syrup