oatmeal raisin cookies recipe

1 cup unsalted butter, softened - 1 cup packed light brown sugar - 1/2 cup granulated sugar - 2 large eggs - 1 teaspoon vanilla extract - 1 1/2 cups all-purpose flour - 1 teaspoon baking soda - 1 teaspoon ground cinnamon - 1/2 teaspoon salt - 3 cups old-fashioned rolled oats - 1 cup raisins