BANANA-WALNUT CHOCOLATE CHUNK COOKIES

Banana-Walnut Chocolate Chunk Cookies image

Provided by Martha Stewart

Yield Makes about 3 dozen

Number Of Ingredients 13

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1 cup all-purpose flour
1/2 cup whole-wheat flour
1 teaspoon coarse salt
1/2 teaspoon baking soda
3/4 cup (1 1/2 sticks) unsalted butter, softened
1/2 cup granulated sugar
1/2 cup packed light-brown sugar
1 large egg
1 1/2 teaspoons pure vanilla extract
1/2 cup mashed ripe banana (about 1 large)
1 cup old-fashioned rolled oats
8 ounces semisweet chocolate, coarsely chopped into 1/4-inch chunks
1/2 cup coarsely chopped walnuts (about 2 ounces), toasted

Steps:

Preheat oven to 375 degrees. Whisk together flours, salt, and baking soda in a small bowl; set aside. Put butter and sugars into the bowl of an electric mixer fitted with the paddle attachment; mix on mediumspeed until pale and fluffy. Reduce speed to low. Add egg and vanilla; mix until combined. Mix in banana. Add flour mixture; mix until just combined. Stir in oats, chocolate chunks, and walnuts.
Using a 1 1/2-inch ice cream scoop, drop dough onto baking sheets lined with parchment paper, spacing about 2 inches apart. Bake cookies, rotating sheets halfway through, until golden brown and just set, 12 to 13 minutes. Let cool on sheets on wire racks 5 minutes. Transfer cookies to wire racks; let cool completely. Cookies can be stored in airtight containers up to 2 days.