These dark chocolate oatmeal cookies are big, chewy cookies made with cocoa powder, rolled oats, brown sugar and semisweet chocolate chips. One batch makes 12 to 15 large cookies, and they need only 10 to 12 minutes at 350°F on two parchment lined baking sheets.
The one thing to get right is when you take them out. Pull them while the middles still look soft, and they set into fudgy centers with crisp edges and melted chips on top.
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Try the Recipe Converter →What Makes These Oatmeal Cookies Dark?
It is the cocoa. Half a cup of unsweetened cocoa powder goes into the dry ingredients, which turns the dough a deep brown and gives it a bittersweet, brownie-like taste before a single chip goes in. Then come 1¾ cups of semisweet chips, most folded into the dough and a few pressed on top.
Regular unsweetened (natural) cocoa reacts with the baking soda and gives the cookies a little lift. Dutch-process cocoa works too. It bakes up darker and tastes smoother, and the cookies spread slightly more. For a truly dark chocolate cookie, swap the semisweet chips for dark chocolate chips or a chopped 60 to 70 percent bar.
Getting a Chewy Dough, Not a Cakey One
Measure the flour by spooning it into the cup and leveling it off. You need 1¾ cups. Scooping straight from the bag packs in extra flour, and with cocoa and oats already soaking up moisture, that is how you end up with dry, domed cookies.
Use rolled oats. Quick oats absorb more liquid and lose their shape, so the cookies turn dense and a bit pasty, with none of those visible oat flakes.
Butter matters here. It should be soft enough to hold a fingerprint but not shiny or greasy. Cream it with both sugars for 2 to 3 minutes until lighter in color, beat in the eggs one at a time, then the vanilla. Add the dry ingredients on low speed and stop as soon as no dry flour shows. Overmixing at this point is what makes oatmeal cookies tough.
Fold in 1½ cups of the chips by hand and keep the last ¼ cup for the tops. If the dough feels soft and greasy on a warm day, put the bowl in the fridge for 20 to 30 minutes. Warm dough spreads into thin cookies.
How Big to Make Each Cookie
To get 12 to 15 cookies, scoop about ⅓ cup of dough for each one. Space them 2 inches apart, which fits about 6 on a sheet, and flatten each mound slightly with your palm. Press a few of the reserved chips and a pinch of oats onto the tops so they look like the cookies in the photos.
Smaller cookies are fine for lunchboxes or a cookie tray; you will get more of them, so start checking a couple of minutes before the 10 minute mark.
How to Tell When Chocolate Cookies Are Done
With a pale cookie you wait for golden edges. Cocoa dough never shows you that, so the color is no help at all. Watch the surface instead.
- Ready: the edges look dry, matte and set, and the center still looks soft, puffed and a little glossy. Usually 10 to 12 minutes.
- Too early: the whole top is shiny and the edges move when you nudge the pan.
- Too late: the center looks matte and cracked all the way across. These cool into dry, crumbly cookies.
Rotate the sheets halfway through so both trays bake evenly, then leave the cookies on the hot pan for 5 minutes before you move them to a wire rack to cool. That rest finishes the middles. Trust it, because the cookie that looks a little underdone at 10 minutes is the one that ends up fudgy.
Making the Dough Ahead and Freezing
Yes, you can make the dough ahead. It keeps in the fridge for a day. Let it sit at room temperature for a bit so you can scoop it, then bake as usual.
For cookies on demand, freeze scooped dough balls on a tray, then move them to a freezer bag. Bake straight from frozen and add a minute or two to the time. Baked cookies keep for 5 days in an airtight container at room temperature, or 3 months in the freezer. A few seconds in the microwave brings back the melty chips.
That makes them handy for fall and holiday cookie tins. Bake a few varieties from frozen dough on the same afternoon, these next to my pumpkin oatmeal cookies and oatmeal cream pie cookies.
Mix-Ins and Swaps
Nuts are good here. Chopped walnuts, pecans, or dried cherries all work well with the cocoa and oats. Fold in about ½ cup with the chips. Want them more chocolatey? Reach for darker chips rather than extra cocoa, because more cocoa without more butter only makes the dough dry and the cookies crumbly.
Serve them warm with cold milk, coffee, or a scoop of vanilla ice cream pressed between two cookies.
Quick Answers on Chocolate Oatmeal Cookies
Why did my chocolate oatmeal cookies spread flat?
Warm butter, usually. Either it was too soft or melted or the dough sat in a warm kitchen, so chill it for 20 to 30 minutes and always bake on a cool baking sheet.
Why are my cookies dry?
Too much flour, or a minute too long in the oven. Spoon and level the flour and pull the cookies while the centers still look soft.
Can I use quick oats?
You can, but rolled oats give the chewy texture and visible oat flakes. Quick oats make a denser, flatter tasting cookie.
Pin It for Your Next Cookie Day
Save this recipe to your cookie board so it is there the next time you want something chocolatey. If you like the oats and chips together, try my oatmeal chocolate chip cookies or the coconut version. For more cocoa without the oats, bake dark chocolate brown sugar cookies or brownie crinkle cookies. And for a no-bake chocolate and oat snack, there are dark chocolate oatmeal cups.
Dark Chocolate Oatmeal Cookies: A Rich, Chewy Treat
These dark chocolate oatmeal cookies are chewy chocolate oatmeal cookies made with rolled oats, unsweetened cocoa powder, brown sugar, butter, and semisweet chocolate chips. The recipe makes 12 to 15 large cookies that bake in 10 to 12 minutes at 350°F, with set edges, soft fudgy centers, and melted chips on top. Pull them when the edges look matte and set but the middles still look soft, because they finish baking on the hot pan. Bake them for lunchboxes, cookie swaps, fall and holiday cookie tins, or serve them warm with vanilla ice cream. Swap in dark chocolate chips for a deeper flavor. They keep 5 days airtight, and the baked cookies freeze for 3 months.
Ingredients
For the Cookies
- 1 3/4 cups all-purpose flour (updated from 1 1/2 cups)
- 1 1/4 cups rolled oats
- 3/4 cup unsalted butter, softenedTip: Room-temperature butter ensures even mixing and a smooth dough.
- 3/4 cup granulated sugar
- 3/4 cup brown sugar, packedNote: Brown sugar adds moisture and a rich, caramel-like flavor.
- 2 large eggs
- 1 tsp vanilla extract
- 1/2 cup unsweetened cocoa powder
- 1 tsp baking soda
- 1/2 tsp baking powder
- 1/2 tsp salt
- 1 3/4 cups semisweet chocolate chips (reserve 1/4 cup for topping)
For the Finishing Touch
- Additional chocolate chips and rolled oats (for sprinkling on top)
Instructions
Preheat and Prepare
- Preheat your oven to 350°F (175°C) and line two baking sheets with parchment paper. This ensures your cookies bake evenly and don't stick to the pan.
- In a medium bowl, whisk together the flour, rolled oats, cocoa powder, baking soda, baking powder, and salt. Set aside.
Tip: Sifting the dry ingredients helps distribute the cocoa powder evenly, resulting in a smooth, rich dough.
Cream the Butter and Sugars
- In a large mixing bowl, cream together the softened butter, granulated sugar, and brown sugar until light and fluffy, about 2-3 minutes. Add the eggs one at a time, beating well after each addition. Stir in the vanilla extract.
Tip: Beating the butter and sugars until fluffy ensures a tender, chewy cookie texture.
Combine and Add the Chocolate Chips
- Gradually add the dry ingredients to the wet mixture, mixing on low speed until just combined. Be careful not to overmix, as this can toughen the cookies. Fold in 1 1/2 cups of the chocolate chips by hand, reserving the remaining 1/2 cup for topping.
Tip: Folding in the chocolate chips by hand ensures they’re evenly distributed without overworking the dough.
Scoop and Shape the Cookies
- Use a cookie scoop or two tablespoons to drop mounds of dough onto the prepared baking sheets, spacing them about 2 inches apart. Slightly flatten each mound with your hand, then press a few of the reserved chocolate chips and a sprinkle of rolled oats onto the top of each cookie.
Tip: Pressing extra chocolate chips on top gives the cookies a rich, chocolatey appearance.
Bake to Perfection
- Bake the cookies in the preheated oven for 10-12 minutes, or until the edges are set but the centers are still soft. The cookies will continue to set as they cool, so avoid overbaking them.
Tip: Rotate the baking sheets halfway through baking for even cooking.
Cool and Serve
- Allow the cookies to cool on the baking sheets for 5 minutes before transferring them to a wire rack to cool completely. This helps them firm up while maintaining their chewy texture.
Tip: For the ultimate treat, enjoy the cookies while they’re still warm, with the chocolate melted and gooey.
Notes
Fold 1 1/2 cups of the chocolate chips into the dough and keep the remaining 1/4 cup for pressing on top. Use about 1/3 cup of dough per cookie to get 12 to 15 cookies; smaller cookies need a couple of minutes less. Spoon and level the flour, and use rolled oats, not quick oats. Cocoa dough does not turn golden, so take the cookies out when the edges look matte and set and the centers still look soft. If the dough feels greasy, chill it for 20 to 30 minutes. The dough keeps 1 day in the fridge; frozen dough balls can be baked from frozen with 1 to 2 extra minutes. Store baked cookies airtight for 5 days or freeze for 3 months.
Nutrition Information
Yield
12-15Serving Size
1Amount Per Serving Calories 240
I made this and I tried two different ovens, but it got very thin and flat like a Florentine cookie. I’m wondering if the flour amount here was off . I had new baking soda and powder that worked correctly in other cookies , so it wasn’t that, and I’m not at a high elevation. They were good , but spread like crazy ,even though I chilled them.
Hi Amie,
Thank you for giving the recipe a try and sharing your experience. It sounds frustrating to have the cookies spread even after chilling the dough. Given what you’ve described, here are a couple of suggestions to prevent excessive spreading in the future:
Butter Consistency: Sometimes, even room-temperature butter if overly soft, can lead to cookies spreading. Try using butter that is soft yet still slightly firm.
Dough Temperature: If the kitchen is warm, the dough might need more chilling time. Consider chilling overnight if possible.
Flour Measurement: If adding a bit more flour helps, adjust by increasing it slightly, such as adding an extra 1/4 cup to see if that provides better results.
I appreciate your feedback and hope these tips help for your next batch!
Best, Emma
Made the dark chocolate oatmeal for my grandkids today. Absolutely delicious.
That makes me so happy to hear, Marilyn. I love that you made them for your grandkids sounds like a sweet day all around. Thanks for trying the recipe!