As with most of my recipes, you will probably already have the ingredients in your store cupboard:
1/4 cup butter or margarine - room temperature
1 cup soft brown sugar
1 teaspoon baking powder
1 teaspoon vanilla
1 cup plain flour
1/4 teaspoon salt
1/2 chopped pecans (optional)
Cream together the margarine/butter, brown sugar, and egg. Stir in the salt, pecans, and vanilla. Sift the dry ingredients into the creamed mixture and stir until all the flour has been incorporated.
Here comes the hard part, try to let the Blondies cool before cutting into squares to serve. But we both know the best you can hope for is that you resist until the Blondies are still warm because there isn't anything much nicer than a warm blond brownie!