Mom's Butter cookies

This is my mom's butter cookies recipe which has a "melt-in-the-mouth" texture.

Ingredients :

6oz butter
2 1/4 oz castor sugar
6oz flour
1 tsp vanilla essence

Beat butter and sugar until white and fluffy.
Add in vanilla essence
Add flour slowly. Beat until combined.

Place spoonfuls onto a greased baking sheet (or use a cookie dough dispenser for prettier cookies).
Bake for about 12 - 15 minutes until lightly golden brown in a 350F oven.