In your large bowl, whip the softened butter and sugar together until the mixture is light, fluffy and pale yellow. This usually takes about 2 to 3 minutes, so take your time, it’s where the "melt-in-your-mouth" magic happens!
Add in your beautiful egg yolks and your vanilla extract, then whip again until everything is silky smooth and well combined.
Let’s now add the extra N.B. touch, your maple syrup. Whip again quickly.
Now let’s add our flour and salt, mixing just until the white streaks of flour disappear. Remember, over-mixing makes a tough cookie, and we want these light and delicate!
Roll the dough into 1-inch balls and flatten them slightly with a fork, or use a cookie press if you have one. If you're using coarse sugar, now is the time to give each cookie a little dusting.
Bake in your preheated oven at 350°F for 10 to 12 minutes until the edges are just barely golden brown. They will still look a bit soft in the middle, but they'll firm up as they cool. P.S. all ovens vary so watch for the golden edges. It may take extra time.
Let the cookies cool on the tray for a few minutes before moving them to a wire rack. Try not to eat them all while they're warm (good luck with that!).