Steel Cut Oatmeal Bars

These Steel Cut Oatmeal Bars are hearty, filling and perfect for busy mornings. They have a dreamy soft and chewy texture, they're affordable to make and my teenage boys happily grab them for breakfast or snacks, which is always a win in my house!

Unlike oatmeal bars made with rolled oats, these are made with partially cooked steel cut oats, giving them a heartier, chewier texture that keeps every bite satisfying.

Make a batch ahead of time for an easy grab-and-go breakfast all week long. They're endlessly customizable, too, so you can add chocolate chips, dried fruit, nuts or whatever you happen to have on hand.

If you're looking for a homemade breakfast bar that's easy to meal prep and substantial enough to keep everyone satisfied, this is one of those simple recipes you'll want to make again and again. Pair one with my Banana Protein Muffins for an easy breakfast everyone will love.

Why This Recipe Works

• Perfect for busy mornings. Make a batch ahead of time for an easy breakfast you can grab on your way out the door or quickly reheat in the morning.
• Teenager approved. My teenage boys happily grab these for breakfast or an afternoon snack, so I love keeping a batch on hand.
• Affordable and filling. These homemade oatmeal bars are made with inexpensive pantry staples and are hearty enough to actually satisfy hungry bellies.
• Easy to customize. Use whatever mix-ins you have on hand! Go with chocolate chips and peanut butter, dried fruit and nuts or coconut, cashews and chia seeds. You can even divide the mixture and make two different flavors from a single batch.
• That texture! Steel cut oats give these bars a hearty, soft and chewy texture that makes them different from traditional oatmeal bars made with rolled oats.
• Perfect any time of day. These bars work just as well for breakfast, afternoon snacks or even a quick dessert.

Ingredients for Steel Cut Oatmeal Bars

This recipe uses simple, affordable ingredients, many of which you probably already have in your pantry.

Most of the ingredients are pantry staples, making these oatmeal bars an easy breakfast to whip up without an extra trip to the grocery store.

Steel cut oats – Also called Irish oats, steel cut oats have a coarser texture than rolled oats. They are partially cooked before being added to the bars, giving them a hearty, chewy texture. Look for them near the rolled and quick oats at the grocery store.

All-purpose flour – For a gluten-free option, use a 1:1 gluten-free baking flour. Be sure your oats are certified gluten free as well, if needed.

Baking soda – Make sure your baking soda is fresh for the best results.

Salt – Helps balance the sweetness and enhance the other flavors in the bars.

Butter – Salted or unsalted butter will work. If using salted butter, you can reduce or omit the added salt.

Eggs – Help bind the oatmeal bars together and give them structure.

Brown sugar – Either light or dark brown sugar will work. Dark brown sugar will add a slightly richer molasses flavor.

Honey – Adds sweetness and helps keep the bars soft and chewy. Pure maple syrup can be used as a substitute, although the flavor and texture may vary slightly.

Vanilla extract – Adds warmth and flavor to the bars.

Add-ins – This is where you can have fun! Use up to 1 1/2 cups total of chocolate chips, peanut butter chips, raisins, dried cranberries, chopped nuts, coconut flakes or your favorite trail mix.

Mix and match your favorites, but avoid exceeding 1 1/2 cups so the bars hold together properly.

Best Mix-Ins for Oatmeal Bars

One of the best things about these steel cut oatmeal bars is how easy they are to customize. Use your favorite mix-ins or whatever you already have in the pantry. Just keep the total amount of add-ins to 1 1/2 cups or less so the bars hold together properly.

Chocolate chips – Try semi-sweet, milk, dark or white chocolate chips. Peanut butter or butterscotch chips are delicious, too.

Dried fruit – Raisins, dried cranberries, blueberries, cherries or chopped apricots all work well. Use fresh fruit sparingly, since it releases extra moisture as it bakes.

Nuts – Add chopped cashews, peanuts, almonds, pecans or walnuts for extra crunch.

Seeds – Try sunflower seeds, pumpkin seeds, chia seeds or ground flaxseed.

Coconut – Unsweetened coconut flakes add texture and a subtle coconut flavor.

Trail mix – Use your favorite trail mix for an easy combination of dried fruit, nuts, seeds and chocolate.

For even more variety, divide the oatmeal mixture in half before adding your mix-ins and make two different flavors from a single batch.

How to Make Steel Cut Oatmeal Bars

1. Partially cook the steel cut oats. Bring 6 cups of water to a boil in a large saucepan. Add the steel cut oats and cook for 10 minutes. The oats should be partially cooked and softened but still have a chewy texture. Drain well and set aside to cool slightly.
2. Prepare the baking pan. Preheat the oven to 350°F. Line a 9x13-inch baking pan with parchment paper and set aside.

7. Cool and cut into bars. Let the bars cool in the pan for at least 10 minutes. Use the parchment paper to carefully lift them from the pan, then transfer to a flat surface and cut into squares.

Recipe Notes

• Drain the oats well. After partially cooking the steel cut oats, allow as much excess water as possible to drain before adding them to the oatmeal bar mixture.
• Use parchment paper. Lining the pan with parchment makes cleanup easy and allows you to lift the entire batch of bars from the pan before slicing.
• Spread the mixture evenly. Press the oatmeal bar mixture into an even layer so the bars bake evenly from edge to edge.
• Don't overbake. Remove the bars from the oven when the edges are lightly golden and the center is set. Overbaking can make them dry rather than soft and chewy.
• Let the bars cool before cutting. Allow them to cool in the pan for at least 10 minutes before lifting them out. For the cleanest cuts, let them cool completely before slicing into individual bars.
• Customize each half. Divide the batter in half before stirring in the mix-ins if you'd like to make two different flavors from one batch.

How to Serve Oatmeal Bars

These steel cut oatmeal bars are delicious served warm or at room temperature. Enjoy one on its own for an easy grab-and-go breakfast, or pair it with fresh fruit and Greek yogurt for a more filling meal.

For breakfast or a quick snack, I love spreading a little peanut butter or almond butter on top. You can also add a drizzle of honey or a spoonful of your favorite jam. Or crumble an oatmeal bar over vanilla yogurt for an easy breakfast parfait.

Want to turn them into dessert? Warm up an oatmeal bar and top it with a scoop of vanilla ice cream, whipped cream or fresh berries.

How to Store Homemade Oatmeal Bars

Allow the oatmeal bars to cool completely before storing them in an airtight container in the refrigerator with parchment paper between layers to prevent sticking. For the best texture and flavor, enjoy them within 5 to 7 days.

Warm individual bars briefly in the microwave before serving, or enjoy them cold or at room temperature.

Can You Freeze Oatmeal Bars?

Yes! These steel cut oatmeal bars freeze well, making them a great option for meal prep. Once completely cooled, place the bars in a freezer-safe container or bag with parchment paper between the layers to prevent sticking.

Freeze for up to 2 months. Thaw individual bars overnight in the refrigerator or at room temperature before serving.

Steel Cut Oats vs. Rolled Oats

Rolled oats and steel cut oats come from the same whole oat groats, but they are processed differently.

Steel cut oats, sometimes called Irish oats or coarse oats, are made by cutting whole oat groats into smaller pieces. They have a hearty, chewy texture and slightly nutty flavor and generally take longer to cook.

Rolled oats, also called old-fashioned oats, are steamed and flattened into flakes. This allows them to cook more quickly and gives them a softer texture.

For these oatmeal bars, I use partially cooked steel cut oats because I love the hearty, chewy texture they give the finished bars.

Do Steel Cut Oats Need To Be Cooked Before Baking?

For this oatmeal bar recipe, the steel cut oats should be partially cooked before baking. Cook them in boiling water for 10 minutes, then drain well before adding them to the oatmeal bar mixture.

Partially cooking the oats gives them time to soften while still maintaining the hearty, chewy texture that makes these steel cut oatmeal bars so delicious. Adding uncooked steel cut oats directly to this recipe would result in bars with a much firmer, potentially crunchy texture.

Can I Use Rolled Oats Instead of Steel Cut Oats?

I recommend using steel cut oats for this recipe since the recipe has been developed around their unique texture and the partial-cooking method. Rolled oats absorb liquid differently and cook much more quickly, so substituting them may change the texture and consistency of the finished bars.

If you want to experiment with rolled oats, keep in mind that you should not partially cook them first.

Are Oats Gluten Free?

Oats are naturally gluten free, but they can come into contact with gluten-containing grains such as wheat during growing, processing or packaging.

If you need these oatmeal bars to be gluten free, use oats labeled certified gluten free and replace the all-purpose flour with a 1:1 gluten-free baking flour.

Are Steel Cut Oatmeal Bars Healthy?

Steel cut oatmeal bars can absolutely be part of a balanced breakfast or snack. They're made with whole grain steel cut oats, which provide fiber and a hearty texture that helps make these bars satisfying.

Like many homemade baked goods, they also contain butter, brown sugar and honey, so they're best enjoyed as part of an overall balanced diet. If you'd like to boost the nutrition even more, try adding chopped nuts, seeds or dried fruit instead of chocolate chips.

More Oatmeal Recipes

• Easy Creamy Oatmeal
• Raisin and Spice Oatmeal
• Peach Baked Oatmeal with Blueberries
• Cinnamon Roll Baked Oatmeal
• Instant Pot Pumpkin Oatmeal