Gluten Free Jam Thumbprint Cookies

0 Preheat the oven to 350 F.
1 Add the butter and sugar to a large bowl and beat with an electric mixer for 1 minute, until fluffy.
2 Add the vanilla, almond extract, egg yolks, and salt to the bowl with the butter and sugar and beat for another 30 seconds, until just combined.
3 Then, add the flour 1/2 cup at a time, beating constantly, until the dough is fully formed.
4 Line two baking sheets with parchment paper, then roll the dough into one tablespoon-sized balls, make an indentation in each with a teaspoon, or your finger, and fill with jam.
5 Bake for 18-20 minutes, until the cookies brown around the outside, then let cool for at least 15 minutes before serving.