Chocolate Chip Walnut Cookies Recipe

This is what I make when I need cookies for a crowd - bake sales, potlucks, or just to have dough in the freezer. Ground oatmeal and a Hershey bar mixed into the dough gives them better texture than regular chocolate chip cookies.
Harper Donahue
June 27, 2025

Ingredients

  • 4 cups all-purpose flour
  • 5 cups oatmeal (ground into powder)
  • 24 oz bag semisweet chocolate chips
  • 8 oz Hershey chocolate bar
  • 2 cups chopped pecans
  • 2 cups unsalted butter
  • 2 cups white sugar
  • 2 cups light brown sugar
  • 4 large eggs
  • 2 teaspoons vanilla extract
  • 2 teaspoons baking powder
  • 2 teaspoons baking soda
  • 1/2 teaspoon table salt

Cream the Butter and Sugar

In your stand mixer, beat the butter and both sugars for ~2 minutes until fluffy and lighter in color.

Add the eggs and vanilla. Mix another ~3 minutes until completely smooth – no streaks of egg.

Set this bowl aside.

Grind the Oats and Chocolate

Break up the Hershey bar and pulse in a blender until you have chocolate crumbs about the size of coarse sand. Dump into a small bowl.

Grind the oatmeal in batches until it looks like coarse flour. You want some texture, not baby powder. The oats will fly everywhere if you run it continuously – pulse instead.

Mix the Dry Ingredients

Set a fine-mesh sieve over a large bowl. Add the flour, baking soda, baking powder, and salt. Sift everything through.

Add your ground chocolate and oat flour to the sifted ingredients. Mix with a wooden spoon or your hands until evenly distributed. The chocolate likes to clump – just break it up as you go.

Make the Dough

Turn mixer to low. Add dry ingredients about a cup at a time, waiting ~20 seconds between additions. It’ll look shaggy at first but comes together.

Once the flour is in, add chocolate chips and pecans. Mix on low for ~30 seconds – just enough to distribute without overworking.

Rest the Dough

Divide into 4-5 brick-sized portions. Wrap each tightly in foil.

Refrigerate for at least 24 hours. This lets the oats hydrate and the flavors develop – it’s worth the wait.

These freeze for up to 3 months wrapped in foil. Move to the fridge a day before baking to thaw.

Bake the Cookies

Heat oven to 375F.

Line baking sheets with parchment. Roll dough into balls about 1.5 inches across – smaller than a golf ball. A small cookie scoop makes this fast.

Space 2 inches apart. Press each ball down to ~1/2 inch thick with your palm or a glass bottom.

Bake for ~6-8 minutes. They’ll look slightly underdone in the center – that’s perfect. The edges should be just set, not brown.

Let cool on the pan for ~2 minutes before moving to a wire rack. They firm up as they cool but stay chewy inside.

Store in an airtight container for up to a week, or freeze baked cookies for up to 3 months.

Chocolate Chip Walnut Cookies

This is what I make when I need cookies for a crowd – bake sales, potlucks, or just to have dough in the freezer. Ground oatmeal and a Hershey bar mixed into the dough gives them better texture than regular chocolate chip cookies.
Prep Time: 30 minutes
Cook Time: 8 minutes
Refrigerator Overnight: 1 day
Total Time: 1 day 38 minutes

Ingredients

  • 4 cups all-purpose flour
  • 5 cups oatmeal ground into powder
  • 24 oz bag semisweet chocolate chips
  • 8 oz Hershey chocolate bar
  • 2 cups chopped pecans
  • 2 cups unsalted butter
  • 2 cups white sugar
  • 2 cups light brown sugar
  • 4 large eggs
  • 2 teaspoons vanilla extract
  • 2 teaspoons baking powder
  • 2 teaspoons baking soda
  • 1/2 teaspoon table salt

Instructions

  • Beat butter and sugars until fluffy, about 2 minutes.
  • Mix in eggs and vanilla until smooth, about 3 minutes.
  • Grind Hershey bar into coarse crumbs in blender.
  • Pulse oatmeal into coarse flour.
  • Sift flour, baking soda, baking powder, and salt.
  • Mix ground chocolate and oat flour into dry ingredients.
  • Gradually add dry mixture to wet ingredients on low speed.
  • Fold in chocolate chips and pecans until just combined.
  • Divide dough into 4-5 portions, wrap in foil.
  • Refrigerate 24 hours.
  • Preheat oven to 375F.
  • Form 1.5-inch dough balls, place 2 inches apart on parchment-lined sheets.
  • Press balls to 1/2 inch thickness.
  • Bake 6-8 minutes until edges set but centers slightly underdone.
  • Cool 2 minutes on pan, then transfer to wire rack.
  • Store airtight 1 week or freeze up to 3 months.

What'd You Think?

Recipe Rating