Peanut Blossoms, The Definitive Recipe

This is the recipe Grandma Oty baked for us back in the fifties:

Peanut Blossoms

1/2 cup butter
1/2 cup peanut butter
1/2 cup white sugar
1/2 cup brown sugar

Cream butters and sugars thoroughly.

1 egg
1 teaspoon vanilla

Add egg and vanilla. Mix.

1-3/4 cups flour
1 teaspoon soda
1/2 teaspoon salt

Combine flour, soda, and salt; add to creamed mixture and mix.

Sugar
1 package Hershey's chocolate kisses, unwrapped

Form dough into one-inch balls and roll in sugar. Place on baking sheet and bake at 375º for 8 minutes. Remove from oven, squash one chocolate kiss into the center of each cookie, and return to oven for 2 to 5 minutes, or until light brown.