Mix softened butter with sugar thoroughly.
Use your electric mixer for this.
Beat until light and fluffy.
This takes about 3 minutes.
The mixture should look pale yellow.
Pour in the vanilla extract.
Mix it in completely.
The vanilla adds wonderful flavor.
Mix flour and salt together.
Add this to your butter mixture.
Mix on low speed only.
Don't overmix the dough.
Wrap dough in plastic wrap.
Refrigerate for at least 30 minutes.
This makes rolling much easier.
Preheat your oven to 350°F.
Roll dough to 1/4 inch thickness.
Use cookie cutters for fun shapes.
Place cookies on parchment-lined sheets.
Beat one egg lightly.
Brush it on cookie tops.
This creates a beautiful shine.
Bake for 20-25 minutes.
Edges should turn lightly golden.
Don't overbake them.
Let cookies cool on baking sheet.
Transfer to a cooling rack.
Wait before decorating or eating.