Soft and Chewy Oatmeal Cookies Recipe1/2 cup (1 stick) unsalted butter, softened 1/2 cup shortening 1 cup light brown sugar, packed 1 cup granulated sugar 2 large eggs 2 teaspoons baking soda 1 teaspoon salt 1/2 teaspoon baking powder 1 Tablespoon vanilla extract 2 1/4 cup all-purpose flour 2 cups old fashioned oats