Nutella Stuffed Oatmeal Cookie Bars Recipe for Soft Chewy Treats

By:

Thea Rousseau

Published:

August 26, 2025

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The Nutella stuffed oatmeal cookie bars are a game-changer for anyone craving a quick and tasty treat. They’re simple to whip up, perfect for busy days when you want something sweet without much fuss. Not to mention, they pack in wholesome oats that bring a nice bit of fiber and energy to keep you going.

What makes these bars stand out is the mix of creamy Nutella hidden inside chewy oatmeal goodness, creating a flavor explosion in every bite. You can tweak the recipe to fit different needs, like making it vegan or gluten-free, so everyone at your table can join in. Plus, they’re versatile enough to enjoy as a snack, dessert, or even a fun twist on breakfast for the whole family to love.

With just a short bake time, you’ll have soft and chewy bars that bring a smile to busy parents, students, and baking enthusiasts alike. These treats offer a balance of health benefits from oats while delivering that indulgent chocolate hazelnut taste we all adore. Whether you’re a newbie in the kitchen or a pro, this recipe will become your go-to for delightful homemade goodies.

Jump to:

Why You’ll Love This Nutella Stuffed Oatmeal Cookie Bars
Essential Ingredients for Nutella Stuffed Oatmeal Cookie Bars
How to Prepare the Perfect Nutella Stuffed Oatmeal Cookie Bars: Step-by-Step Guide
Dietary Substitutions to Customize Your Nutella Stuffed Oatmeal Cookie Bars
Mastering Nutella Stuffed Oatmeal Cookie Bars: Advanced Tips and Variations
How to Store Nutella Stuffed Oatmeal Cookie Bars: Best Practices
FAQs: Frequently Asked Questions About Nutella Stuffed Oatmeal Cookie Bars
How do I make Nutella stuffed oatmeal cookie bars from scratch?
Can I use quick oats instead of rolled oats in Nutella oatmeal cookie bars?
How should I store Nutella stuffed oatmeal cookie bars to keep them fresh?
Are Nutella stuffed oatmeal cookie bars suitable for meal prep or snacks?
Can I make Nutella stuffed oatmeal cookie bars dairy-free or vegan?
Nutella Stuffed Oatmeal Cookie Bars
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Gathering the right ingredients is key to making amazing Nutella stuffed oatmeal cookie bars. Each one plays a role in creating that perfect chewy texture and rich flavor. Let’s break down the list so you can get everything ready with ease.

10 tablespoons (141g) unsalted butter, softened
¾ cup (170g) light brown sugar, packed
2 teaspoons pure vanilla extract
1 large egg
1⅓ cups (165g) all-purpose flour
1 cup (80g) old-fashioned rolled oats
½ teaspoon baking soda
¼ teaspoon salt
⅔ cup (approx. 190g) chocolate hazelnut spread
½ cup (approx. 85g) semisweet chocolate chips

This structured list ensures you have the exact measurements for a successful bake. For special tweaks, you can swap butter with coconut oil for a vegan version or use gluten-free flour to meet dietary needs. Remember, measuring accurately helps achieve that ideal dough texture every time.

Let’s dive into making these Nutella stuffed oatmeal cookie bars it’s easier than you think and so much fun! Start by preheating your oven and getting your pan ready for baking. You’ll love how the steps flow smoothly, turning simple ingredients into a yummy treat in no time.

Preheat oven to 350°F (175°C). Line an 8×8 inch baking pan with foil or parchment paper and spray with nonstick spray.
In a bowl, beat the softened butter and packed light brown sugar until combined. Beat in the pure vanilla extract and large egg.
Gradually mix in the all-purpose flour, old-fashioned rolled oats, baking soda, and salt until just combined.
Press slightly more than half of the dough mixture evenly into the bottom of the prepared pan. Chill the remaining dough.
Bake the crust for 12 minutes. Remove from the oven.
Gently spread the chocolate hazelnut spread evenly over the warm baked crust. Sprinkle the semisweet chocolate chips evenly over the spread.
Take the chilled dough, press it into small flat pieces, and arrange these pieces over the chocolate layer, covering as much as possible.
Return the pan to the oven and bake for an additional 18-22 minutes, or until the top is golden brown.
Cool the bars completely on a wire rack before cutting. Serving them slightly warm keeps the filling gooey while making neat slices easy.

Along the way, you might want to check out our easy oatmeal recipes for more ideas on variations. This process takes about 15 minutes to prepare and 30 minutes to cook, so you’ll have fresh bars in around 45 minutes total.

One of the best things about Nutella stuffed oatmeal cookie bars is how flexible they are for different diets. If you’re looking to make them vegan, swap the egg with a flax or chia egg to keep everything binding nicely. For dairy-free options, use plant-based butter instead of unsalted butter for that same creamy richness.

Gluten-sensitive? Go for gluten-free flour blends or almond flour to maintain the texture without issues. You can also mix in extras like cinnamon or nutmeg for a warm twist, or swap brown sugar with maple syrup for a natural sweetness. These changes make the bars a hit for everyone, from diet-conscious folks to busy families.

For lower-calorie versions, try unsweetened applesauce in place of some butter and cut back on sugar a bit. Don’t forget to explore our gluten-free baking tips for more helpful advice on substitutions.

Taking your Nutella stuffed oatmeal cookie bars to the next level is all about smart tricks and fun twists. First off, chill the dough before baking to keep the bars thick and chewy it’s a simple step that makes a big difference. Use parchment paper for easy removal, so your bars come out clean and ready to impress.

When it comes to flavors, get creative by adding sea salt flakes for a sweet-salty vibe or orange zest for a fresh pop. You could swap the chocolate hazelnut spread for other nut butters to mix things up. For presentation, drizzle melted chocolate on top or dust with powdered sugar it makes them look as good as they taste.

If you’re planning ahead, make the dough in advance and freeze it for later. Here are some quick tips to remember:

Weigh flour for accuracy to get the right dough texture.
Use fresh, soft light brown sugar for the chewiest results.
Press dough into the pan with moistened fingers for a smooth layer.
Dollop the spread gently on the warm crust for easier spreading.

These pointers, along with serving them slightly warm, will help you nail that gooey center every time.

Keeping your Nutella stuffed oatmeal cookie bars fresh is easy with the right storage methods. Pop them in an airtight container in the fridge for up to a week to hold onto that soft texture. If you want them to last longer, wrap each bar tightly and freeze for up to three months it’s perfect for meal prep.

To reheat, warm them in the microwave for 15-20 seconds or in the oven at 300°F (150°C) for 5-7 minutes. This brings back that fresh-baked feel without much effort. For busy folks, portion them into containers for grab-and-go snacks that fit right into your routine.

How do I make Nutella stuffed oatmeal cookie bars from scratch?

To make Nutella stuffed oatmeal cookie bars, start by preparing a basic oatmeal cookie dough using ingredients like rolled oats, flour, brown sugar, butter, eggs, vanilla extract, baking soda, and salt. Press half of the dough evenly into a greased baking pan. Spread a generous layer of Nutella over the dough, leaving a small border around the edges. Crumble the remaining dough on top to cover the Nutella layer. Bake at 350°F (175°C) for about 25-30 minutes until the top is golden brown. Let cool completely before cutting into bars for the best texture.

Can I use quick oats instead of rolled oats in Nutella oatmeal cookie bars?

Yes, you can use quick oats as a substitute, but the texture will be softer and less chewy than with rolled oats. Rolled oats provide better structure and a heartier bite, which helps the bars hold together around the Nutella filling. If you only have quick oats, consider reducing the baking time slightly to avoid overbaking, and be aware that the bars may be more delicate when slicing.

How should I store Nutella stuffed oatmeal cookie bars to keep them fresh?

Store the cookie bars in an airtight container at room temperature for up to 3 days to maintain their softness. For longer storage, keep them refrigerated for up to one week. If you want to save them for even longer, wrap individual bars tightly in plastic wrap and freeze for up to 2 months. Thaw frozen bars at room temperature before serving to enjoy the best flavor and texture.

Are Nutella stuffed oatmeal cookie bars suitable for meal prep or snacks?

Absolutely, these cookie bars are a convenient and satisfying option for snacks or meal prep due to their balance of carbohydrates, fats, and a touch of protein from the oats and eggs. They are easy to portion and transport, making them great for on-the-go energy. However, because they contain added sugar and Nutella, they are best enjoyed as an occasional treat rather than a daily meal.

Can I make Nutella stuffed oatmeal cookie bars dairy-free or vegan?

Yes, you can make these bars dairy-free or vegan by swapping butter with plant-based margarine or coconut oil and using a flax egg (1 tablespoon ground flaxseed + 3 tablespoons water) instead of regular eggs. Ensure the Nutella or hazelnut spread you use is dairy-free or choose a vegan alternative. Keep in mind that these substitutions may slightly alter the texture and baking time, so check doneness a few minutes earlier to avoid overbaking.