Butter Crust

Ingredients

• 0.3 lb butter 
• 1 large egg yolk 
• 1.3 cups flour all-purpose
• 0.3 cup sugar 

Equipment

• food processor
• bowl
• oven
• tart form

Directions

1. In a food processor or a bowl, combine flour and sugar.
2. Add butter, cut into small pieces; whirl (or rub with your fingers) until fine crumbs form.
3. Add egg yolk; whirl (or mix with a fork) until dough holds together.
4. Firmly press the dough over bottom and sides of a 10-inch tart pan with removable rim.
5. Bake in a 300 oven until pale gold, 25 to 30 minutes; let cool. If making ahead, wrap airtight and let stand at room temperature up to 1 day, or freeze to store longer. Thaw unwrapped.