Chewy Oatmeal Chocolate Chip Cookies

Yet another variation on basic chocolate chip cookies--when you start with such a delicious basic, it's hard to go wrong!

1 1/2 sticks butter, softened
2/3 cup sugar
2/3 cup dark brown sugar
2 teaspoons vanilla
1 egg
1 1/2 cups flour
1/2 teaspoon baking soda
1/2 teaspoon salt
1 cup old-fashioned oats
1 (12 oz.) bag chocolate chips

Preheat oven to 350. Beat the butter with a wooden spoon until smooth and creamy. Add both sugars and beat until homogeneous. Stir in vanilla and egg and mix well. Add flour, baking soda and salt and give the bowl a few good stirs. Add the oats and chocolate chips and mix until well distributed. Bake on wax-paper lined baking sheets until just set and browning on the edges, 10-12 minutes. Let cool on the baking sheet about 5 minutes, then transfer to wire racks to cool completely.