Ingredients
Instructions
- In a bowl, stir together flour, baking soda, baking powder, and salt.
- Beat together the butter, peanut butter, and sugar until light and fluffy. Beat in vanilla, then egg and egg yolk. Gradually beat in the flour mixture.
- Wrap dough in plastic wrap and refrigerate until chilled, or about 2 hours.Take over-filled tablespoonfuls of dough and drop onto greased/floured cookie sheet about 3 inches apart. Lightly press down each cookie. Using a dinner fork dipped in cold water, lightly press cookies, flattening and forming a criss-cross pattern on each cookie. They won't flatten much more in baking so they should already look cookie-ish.
- Bake at 375° until golden brown, or about 10 to 12 minutes. Cool on baking sheets for a minute; transfer to rack to cool completely.
- Makes about 1 1/2 dozen big peanut butter cookies.