1 Preheat the oven to 350 degrees Fahrenheit.
2 Lightly grease a 13-by-9-by-2-inch pan.
3 In a large bowl, mix oats, sugar, flour and salt.
4 With a pastry blender or 2 knives, cut in butter until texture of coarse corn-meal.
5 Blend in vanilla extract and mix well.
6 Evenly pres the mixture with hands into prepared pan.
7 Bake for 20 to 25 minutes, or until golden. Cool slightly.
8 Cut into bars 2" x 1 1/2 while still warm.
9 Allow to cool completely in pan.