Chocolate Oatmeal Cookies
(Source: America's Test Kitchen)
1 3/4 cups old-fashioned oats
1 cup all-purpose flour
3/4 teaspoon baking powder
1/2 teaspoon baking soda
1/2 teaspoon table salt
10 tablespoons unsalted butter, softened but still cool
1 cup packed light brown sugar
1 large egg
1 teaspoon vanilla extract
3 ounces milk chocolate, melted and cooled
1 cup semisweet chocolate chips
1 cup pecans or walnuts, chopped
Adjust oven racks to upper-middle and lower-middle
positions and heat oven to 350 degrees. Line 2 baking sheets with parchment
paper. Place 1 cup oats in food processor or blender and process until well
ground, about 30 seconds. Transfer to large bowl and stir in flour, baking
powder, baking soda, and salt.
With electric mixer, beat butter and brown sugar together
on medium-high speed until well blended and lumps are gone, about 1 minute.
Scrape down sides of bowl. Add egg and vanilla and beat until light and fluffy,
about 30 seconds. Add melted chocolate and beat until incorporated, about 20
seconds. Add flour mixture and beat on low speed until just incorporated, about
15 seconds. Add remaining 3/4 cup oats, chocolate chips, and nuts and beat on
low speed until evenly distributed, about 10 seconds.
Roll 2 tablespoons of dough into balls and space 2 inches
apart on baking sheets. Bake, rotating and switching position of pans halfway
through baking time, until cookies are cracked and set on top but look moist
within cracks, 14 to 18 minutes. Cool cookies on baking sheets on wire racks
for 5 minutes, then transfer to wire rack to cool completely. (Cookies can be
stored in airtight container for up to 5 days.)