Oatmeal Raisin Cookie Bars are my go-to when I want the comfort of oatmeal raisin cookies in a one-pan situation. They’re chewy, a little hearty from the oats, and easy to slice into neat little squares.
This version leans into that classic flavor with brown sugar and cinnamon, plus plenty of raisins so you actually taste them in every bite. I like the texture here because the edges set up nicely while the center stays soft and chewy.
These are especially good for lunchboxes, casual get-togethers, and cookie trays when you don’t feel like portioning dough. For me, they’re also just a solid “bake once, snack all week” kind of bar.
Why You’ll Love This Recipe
One-pan baking: You press the dough into a 9×13 and you’re done. No scooping, no batches, no babysitting sheet trays.
Soft and chewy: The oats keep the bars chewy, and the brown sugar helps them stay tender for days.
Classic flavor: Cinnamon, vanilla, and raisins give you that familiar oatmeal cookie taste that always works.
Easy to slice and serve: These cut cleanly once they’re cool, so they’re great for sharing, packing, or stacking on a platter.
Flexible mix-ins: Keep them simple with raisins, or add walnuts for a little crunch. You can also swap in other dried fruit without changing anything else.
Ingredients You’ll Need
Pan
- Nonstick spray: This is the quick insurance policy for easy release, especially around the corners.
- Butter: I still like a little butter for greasing even if I use spray. It helps the edges brown and keeps the bars from sticking.
Wet
- Unsalted butter: Softened butter creams better and makes the bars lighter instead of dense. If it’s still cold, the dough won’t mix evenly.
- Light brown sugar: This is where that deeper oatmeal-cookie flavor comes from, and it helps keep the texture chewy.
- Granulated sugar: A little white sugar helps the edges set and gives the bars a more classic cookie bite.
- Eggs: Use large eggs so the dough isn’t dry. They help bind everything together so the bars slice clean.
- Vanilla extract: I use real vanilla here because you really taste it with the cinnamon and brown sugar.
Dry
- All-purpose flour: Regular flour is all you need. Spoon and level if you tend to overpack your measuring cup.
- Baking soda: Don’t skip it. It helps the bars rise just enough and keeps them from baking up heavy.
- Ground cinnamon: This is the main spice, and it makes the whole pan smell like an oatmeal cookie should.
- Fine salt: Salt keeps the sweetness in check and makes the brown sugar and raisins taste more “cookie-like.”
Mix-ins
- Old fashioned rolled oats: I like old fashioned oats for the chewy texture. Quick oats will work in a pinch, but the bars come out softer and less textured.
- Raisins: Regular raisins are great, but golden raisins work too. If yours are very dry, you can plump them in warm water and pat dry first.
- Walnuts: Totally optional, but I like the crunch. If you use them, chop them fairly small so the bars don’t crumble when you cut.
Recipe Instructions
- Preheat the oven: Heat the oven to 350°F. Grease a 9×13-inch baking pan, and if you want easy removal, line it with parchment paper with some overhang on the long sides.
- Get set up: Measure out your ingredients and make sure the butter is at room temperature so it creams smoothly.
- Cream the butter and sugar: Beat the softened butter with the brown sugar and granulated sugar until light and fluffy.
- Add the eggs: Beat in the eggs one at a time, mixing after each one until fully blended.
- Add the vanilla: Mix in the vanilla extract until combined.
- Mix the dry ingredients: In a separate bowl, whisk together the flour, baking soda, cinnamon, and salt.
- Add the dry ingredients: Mix the dry ingredients into the wet ingredients just until you don’t see dry flour anymore.
- Fold in the mix-ins: Fold in the rolled oats, raisins, and walnuts (if using) until everything is evenly distributed.
- Press into the pan: Press the dough evenly into the prepared pan. Take a minute to get the corners even so the bars bake at the same rate.
- Bake: Bake for 22 to 28 minutes, until the edges are golden and the center is set with moist crumbs (not wet batter).
- Cool: Let the bars cool completely in the pan. If you used parchment, lift them out once cool, then slice into bars.
Some of my tips!
This is the part that really makes a difference. If you only read one section, make it this one because this is where I share the little trick that helps the recipe turn out so well.
Recipe Tips & Tricks
Don’t overbake. Pull the pan when the edges look set and lightly golden and the center gives you moist crumbs. The bars keep cooking a bit as they cool, and that’s how you get the chewy middle.
Cool completely before slicing. If you cut too soon, the center can squish and the edges can crumble. I let the pan sit until it’s fully cool, then slice with a sharp knife.
Add a splash of milk if needed. Depending on how you measure flour and how dry your oats are, the dough can feel stiff. A tablespoon or two of milk helps it press into the pan more easily.
Use parchment if you want clean edges. The overhang makes it simple to lift the whole slab out and cut it on a board. It also helps if your pan tends to stick.
Underbake slightly for softer bars. If you like them more on the soft side, bake toward the lower end of the time range. Just make sure the center isn’t wet batter.
Make some touches!
There are plenty of easy ways to serve this depending on the occasion. Keep it simple, or add a few small touches to make it feel a little more special.
Serving Suggestions
- Milk: A cold glass of milk is classic with oatmeal raisin. It’s the easiest way to serve these as an after-school snack.
- Coffee or tea: These are really good with coffee, especially if you like cinnamon. Chai or black tea works nicely too.
- Ice cream: Serve a bar with vanilla ice cream on the side for a simple dessert plate. I like it best if the bar is just slightly warm.
- Fruit: Fresh apple slices or a handful of berries keeps the plate simple. It’s a nice option if you’re packing these for lunch.
Save it for later
This section covers how to store leftovers and what parts of the recipe you can prepare ahead of time.
Storage and Make Ahead
Store the bars airtight at room temperature for up to 4 days. I usually keep them in a container with a tight lid so they stay chewy. If your kitchen runs warm, a cooler spot in the pantry helps.
You can make these ahead for parties or cookie trays since they slice best once fully cooled anyway. Bake them the day before, cover the pan, and cut when you’re ready to serve.
If you want them to last longer, freeze the bars for up to 2 months. I like freezing them in single layers with parchment between so they don’t stick together.
Thaw at room temperature for an hour or two before serving. If you like them softer, a quick 5 to 10 seconds in the microwave brings that chew back.
A few quick answers
This section covers a few extra details that may help before you head to the recipe card.
Recipe FAQs
How do I know when oatmeal raisin cookie bars are done?
Look for golden edges and a center that’s set but still gives you moist crumbs when you test it. If the center still looks like wet batter, give it a few more minutes.
Can I swap the raisins for something else?
Yes. Dried cranberries and chopped dates both work well here. I keep the amount about the same so the bars still hold together and taste balanced.
Can I make these without nuts?
Definitely. Just leave the walnuts out. The bars still bake up chewy and slice well.
Why is my dough so stiff?
Usually it’s from a little extra flour or very dry oats. Add 1 to 2 tablespoons of milk to loosen it up, then press it into the pan.
Can I use quick oats instead of old fashioned oats?
You can, but the texture changes. Quick oats make the bars softer and less chewy, and the slice won’t have as much oat texture.
You might also like
Before you go, take a look at a few other recipes below the recipe card. They use similar ingredients in a different way and are worth saving too.
MORE DINNER RECIPES TO TRY
Oatmeal Raisin Cookie Bars
INGREDIENTS
Pan
- nonstick spray
- 1 tbsp butter for greasing.
Wet
- 1 cup unsalted butter softened
- 1 cup light brown sugar packed
- 1/2 cup granulated sugar
- 2 large eggs
- 2 tsp vanilla extract.
Dry
- 1 1/2 cups all purpose flour
- 1 tsp baking soda
- 1 tsp ground cinnamon
- 1/2 tsp fine salt.
Mix ins
- 3 cups old fashioned rolled oats
- 1 1/2 cups raisins
- 1/2 cup chopped walnuts optional.
INSTRUCTIONS
Prep
- heat oven to 350 F
- grease a 9x13 inch baking pan and optionally line with parchment leaving overhang
- measure ingredients and bring butter to room temperature.
Make batter and bake
- cream butter brown sugar and granulated sugar until light and fluffy
- beat in eggs one at a time then mix in vanilla
- whisk flour baking soda cinnamon and salt then mix into wet just until combined
- fold in oats raisins and optional walnuts until evenly distributed
- press dough evenly into prepared pan
- bake until edges are golden and center is set with moist crumbs 22 to 28 minutes
- cool completely in pan then lift out and slice into bars.
