Chewy Chocolate Oat Bars

24 Servings
Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes

Chewy Chocolate Oat Bars are made with simple brown sugar, vanilla, and oatmeal mixture with rich chocolate in the middle. It’s the perfect on-the-go snack!

If you like Oatmeal Chocolate Chip Cookies, then you’re sure to love this Delicious Bar Recipe. In this recipe, chocolate chips are melted down into a thick creamy layer sandwiched between two layers of old-fashioned oats mixture. You get the same flavors of oatmeal chocolate chip cookies but baked into easy bars that are like homemade granola bars. 

Chewy Chocolate Oat Bars in a stack

If you only think of healthy breakfast when you think of old-fashioned rolled oats, then you’re in for a surprise with these chocolate oatmeal bars. The chewy bars make a great sweet breakfast, on-the-go snack, and after-school treat. Or, you can make them into a more rich dessert by topping the delicious bars with a scoop of Vanilla Ice Cream

These homemade bars are like the dessert version of Chewy Chocolate Chip Granola Bars, and since you make them yourself you know exactly what goes into them and don’t have to worry about any artificial ingredients. The chocolate granola bars are just made with simple and wholesome ingredients like old-fashioned oats, chocolate chips, brown sugar, eggs, and a little salt. It’s a nutritious way to satisfy your sweet tooth that’s somewhere between dessert and granola bars. 

Chewy Chocolate Oat Bars collage

Once you’ve made the Chocolate Oat Bars, you can serve them up right away or store them in the refrigerator for snacks throughout the week. Cut the bars into individual pieces about the size of granola bars. Then you can wrap them individually in parchment paper and put all of them in a zip lock bag. Right before you head out the door, just grab one of the individually wrapped chocolate granola bars to toss in your lunch or eat on the road. It’s the perfect sweet snack to keep you going throughout the day. 

Next time you need easy on-the-go snacks, try making Peanut Butter and Jelly Cereal Bars, Tropical Oatmeal Bars, or Caramel Nut Crumb Bars.

What is the difference between rolled oats and quick cook oats?

Rolled oats, also known as old fashioned oats, are processed by removing the tough husk, steaming, and rolling flat. This makes them cook up in about 10 minutes on the stove, and they still maintain a nice chewy texture that is perfect for baking recipes. Quick Cooking oats have been additionally steamed and rolled even more to make them thinner, softer, and able to cook in about a minute. Quick cook oats tend to me mushier and are not ideal for using in recipes.

How to Make Chewy Chocolate Oat Bars

  • Prep time: Take your butter from the fridge so that it has time to soften before you start the recipe. Then preheat your oven and spray a 9×13 inch baking dish with cooking spray so that the Chewy Oat Bars won’t stick to the pan.
  • Oat mixture: Add the softened butter and brown sugar to your stand mixer. Beat them together on medium speed until they’re creamy and fluffy. It should take about 2-3 minutes. Then add the egg and vanilla extract. Continue mixing until creamy. Add the oats, flour, baking soda, and salt. (Make sure to use old-fashioned oats in the granola mix, not quick oats.) Mix until just combined. No need to overmix. Pour half the granola mixture into the baking pan and use your hands to press it down evenly. 
  • Chocolate filling: Add the chocolate chips, condensed milk, butter, and salt to a large microwave-safe mixing bowl. Microwave in 30-second increments, stirring between each session. Continue microwaving and mixing until the chocolate is smooth. Use a rubber spatula to spread the chocolate over the oats in the pan. 
  • Bake: Sprinkle the remaining oat mixture over the top, and then bake the granola bars for 35-40 minutes until golden brown on top. Let the bars cool completely before serving them. You can put them in the fridge to speed up the process. Use a sharp knife to slice the pan into individual bars and serve. 

More Chewy Oat Desserts

Chewy Chocolate Oat Bars collage

Frequently Asked Questions

Can I melt chocolate in the microwave?

Yes, just make sure you microwave it in 30 second increments, stirring each time. Melting the chocolate together with condensed milk and butter will help to keep it from scorching and let it melt smoothly. You can use this method to melt regular chocolate chips too for any recipe calling for melted chocolate.

Are chewy chocolate oat squares gluten free?

Oats are naturally gluten free, but you still want to make sure that you’re buying a package that is labeled as gluten free to ensure they are processed in a gluten free facility. Substitute the wheat flour in the recipe for a gluten free alternative, such as almond flour, for a completely gluten free oat bar recipe.

Chewy Chocolate Oat Bars on serving platter

Key Ingredients in Chewy Chocolate Oat Bars

  • Rolled Oats: Make sure to buy old fashioned oats or rolled oats for the best chewy chocolate granola bar texture. Quick cook oats will not work as well.
  • Semisweet Chocolate Chips: Semisweet chocolate chips will give these chocolate oatmeal cookie bars the perfect balance of sweet and slightly bitter.
  • Brown Sugar: Brown sugar contains molasses, which is what keeps it moist and lends the deep, rich sweetness. Brown sugar goes particularly well with oats (it’s one of oatmeal’s most popular toppings) which makes it the perfect sweetener for Chewy Chocolate Oat Bars.
  • Unsalted Butter: Use a good quality, unsalted butter for baking recipes. This way, you can add as much or as little salt as you want to the recipe without the butter overwhelming the flavor of your dish.

Variations on Chewy Chocolate Oat Bars

  • Chocolate Peanut Butter Oatmeal Bars: Try adding some peanut butter flavor to your crunchy oat bars by mixing ½ cup creamy peanut butter into the oat mixture. You could also use almond butter or sunflower seed butter instead of peanut butter. 
  • Add-ins: Try mixing some extra ingredients into the chewy granola bars. Dried cranberries, mini marshmallows, coconut flakes, cinnamon chips, mini chocolate chips, crushed pretzels, or toffee bits would all make tasty additions to the oat mixture. 
  • Nuts and Seeds: Pack a nutritious punch by adding chopped nuts such as peanuts, pecans or almonds. Add even more fiber and and protein to your chewy granola bars by mixing in ground flax seeds, hemp seeds, or chia seeds.
  • Oatmeal Raisin Oat Bars: If you like Oatmeal Raisin Cookies, then you’re sure to love this recipe with some raisins and a bit of cinnamon mixed into the oats. 
  • Chocolate: Instead of semisweet chocolate chips, try using milk chocolate chips, dark chocolate chips, or white chocolate chips. 
  • Candies: Mix in your favorite candy to add colorful, crunchy flavor. Try adding M&Ms, Reese’s Pieces, or chop up your favorite chocolate bar like Snickers, Butterfingers, or Kit Kat. 
  • Sweetener: Instead of brown sugar, you can try using maple syrup in the Chocolate Oatmeal Bars. Using maple syrup in place of brown sugar is just a 1 to 1 exchange. 
Chewy Chocolate Oat Bars close up in hand

More Delicious Bar Recipes

How to Store Chewy Chocolate Oat Bars

  • Serve: You can keep homemade Chocolate Granola Bars covered in plastic wrap at room temperature for up to 5 days. If it’s too warm in your house and will melt the chocolate put it in the fridge. 
  • Store: If you’re putting the Oat Bars in the refrigerator, cut them into squares and store them in a zip lock bag or another airtight container. Separate the layers of bars with parchment paper. They’ll be good for up to 1 week. 
  • Freeze: You can also freeze the bars for 2 months. Let them thaw on the counter before eating. 

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Chewy Chocolate Oat Bars

Chewy Chocolate Oat Bars are made with simple brown sugar, vanilla, and oatmeal mixture with rich chocolate in the middle. It’s the perfect on-the-go snack!
Yield 24 Servings
Prep Time 10 minutes
Cook Time 35 minutes
Total Time 45 minutes
Course Dessert
Cuisine American
Author Sabrina Snyder


Chewy Oat Bars:

  • 1 cup unsalted butter , softened
  • 2 cups brown sugar , packed
  • 2 large eggs
  • 2 teaspoons vanilla extract
  • 3 cups rolled oats
  • 2 1/2 cups flour
  • 3/4 teaspoon baking soda
  • 1/2 teaspoon salt

Chocolate Layer:

  • 12 ounces semi-sweet chocolate chips , (about 2 cups)
  • 14 ounces sweetened condensed milk
  • 2 tablespoons unsalted butter
  • 1/4 teaspoon salt


  • Preheat the oven to 350 degrees and spray a 13×9 baking dish with baking spray.
  • To your stand mixer add the butter and brown sugar and cream on medium speed until fluffy, about 2-3 minutes.
  • Add in eggs and vanilla extract until creamy.
  • Add rolled oats, flour, baking soda, and salt until just combined.
  • Spread about half the mixture into the baking dish and press gently.
  • In a large microwave-safe bowl add the chocolate chips, condensed milk, butter, and salt until smooth and creamy.
  • Spread chocolate mixture over the oat mixture.
  • Sprinkle the remaining crumb mixture over the chocolate mixture.
  • Bake for 35-40 minutes.
  • Cool completely before slicing.


Calories: 374kcal | Carbohydrates: 51g | Protein: 5g | Fat: 17g | Saturated Fat: 10g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 5g | Trans Fat: 1g | Cholesterol: 45mg | Sodium: 142mg | Potassium: 226mg | Fiber: 3g | Sugar: 32g | Vitamin A: 339IU | Vitamin C: 1mg | Calcium: 83mg | Iron: 2mg
Chewy Chocolate Oat Bars collage

About the Author: Sabrina Snyder

Sabrina is a professionally trained Private Chef of over 10 years with ServSafe Manager certification in food safety. She creates all the recipes here on Dinner, then Dessert, fueled in no small part by her love for bacon.

Sabrina Snyder is a professionally trained personal and private chef of over 10 years who is the creator and developer of all the recipes on Dinner, then Dessert.

She is also the author of the cookbook Dinner, then Dessert – Satisfying Meals Using Only 3, 5 or 7 Ingredients, published by Harper Collins.

She started Dinner, then Dessert as a business in her office as a lunch service for her coworkers who admired her lunches before going to culinary school and becoming a full time personal chef and private chef.

As a personal chef Sabrina would cook for families one day a week and cook their entire week of dinners. All grocery shopping, cooking and cleaning was done along with instructions on reheating. As a private chef she cooked for private parties and cooked in family homes in the evenings for families on a nightly basis after working as a personal chef during the day.

Sabrina has been certified as a ServSafe Manager since 2007 and was a longstanding member of the USPCA Personal Chef Association including being on the board of the Washington DC Chapter of Chefs in the US Personal Chef Association when they won Chapter of the year.

As a member of the community of food website creators Sabrina Snyder has spoken at many conferences regarding her experiences as a food writer including the Indulge Food Conference, Everything Food Conference, Haven Food Conference and IACP Annual Food Professionals Conference.

Sabrina lives with her family in sunny California.

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