How to Make Thumbprint Cookies

• Preheat oven to 350^oF (177^oC). Line two baking sheet pans with parchment paper or a baking mat. 
• In the mixing bowl sift flour and salt. Set aside. 
• In the bowl of a stand mixer with a paddle attachment, cream butter and sugar for 2-3 minutes or until light and fluffy.
• Mix in the egg and vanilla bean paste or vanilla extract. Add the flour mixture and beat again.
• With the help of a cookie scoop or tablespoon, roll the dough into 1-inch balls. Roll each ball in granulated sugar and place it on a prepared baking sheet pan. 
• Using your thumb or spoon, make a small impression in the center of each ball of cookie dough. Fill the impression with jam. 
• Bake cookies at 350^oF (177^oC) for 12-14 minutes or until the cookies are lightly browned on the edges.
• Remove from the oven and cool on a baking pan for 5-10 minutes, then carefully transfer the cookies to a wire rack to cool completely.