In a food processor cup, add all ingredients: room temperature butter, icing sugar, all-purpose flour, salt, Earl Grey leaves and Earl Grey extract (or vanilla extract, if using this substitution).

Pulse until dough is formed.

Divide the dough into 2, rolling each part into a log of about 1 ½ to 2 inches in diameter.

Wrap each log in plastic wrap and refrigerate for at least 1 hour.

Preheat the oven to 350 degrees Fahrenheit.

Use a sharp knife to cut ¼ to ½ inch thick slices.

Place cookies in a lined baking pan, at least an inch apart.

Bake for about 10 minutes. Cookies are ready when barely golden at the bottom.

Place cookies to cool in a cooling rack.