| 2 cups all-purpose flour | |
| 1 teaspoon baking soda | |
| 1/2 teaspoon baking powder | |
| 1 teaspoon salt | |
| 1 cup old-fashioned rolled oats | |
| 2 sticks (1 cup) unsalted butter, softened | |
| 1 1/4 cups firmly packed light brown sugar | |
| 1/4 cup granulated sugar | |
| 2 large eggs | |
| 1 teaspoon vanilla | |
| 2 cups (12 ounces) semisweet chocolate chips |
Preheat oven to 350°F.
In a bowl whisk together flour, baking soda, baking powder, salt, and oats. In another bowl with an electric mixer cream butter and sugars until light and fluffy. Beat in eggs, 1 at a time, beating well after each addition, and beat in vanilla. Beat in flour mixture and stir in chocolate chips.
Drop dough by rounded tablespoons 2 inches apart onto buttered baking sheets and bake cookies in batches in middle of oven 12 to 15 minutes, or until golden. Cool cookies on racks.
Cookies keep in airtight containers 5 days
来源：https://www.epicurious.com/recipes/food/views/chocolate-chip-oatmeal-cookies-11543
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