Ingredients
- 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
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1. 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.
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2. 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.
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3. 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.)