Easy Oatmeal Raisin Cookie Cake That’s Soft, Chewy, and Ready in 30 Minutes

If you love the cozy comfort of oatmeal raisin cookies but crave something a little more celebratory, this oatmeal raisin cookie cake is your answer. It bakes up thick, tender, and full of cinnamon-kissed flavor—like your favorite childhood cookie baked into one giant, shareable slice of happiness. Perfect for birthdays, potlucks, or just because it’s Tuesday.

What Is Oatmeal Raisin Cookie Cake?

This oatmeal raisin cookie cake is essentially a giant, soft-baked cookie baked in a round pan instead of as individual rounds. It keeps all the comforting textures you love—chewy edges, a slightly gooey center, and hearty oats studded with plump raisins—but delivers them in cake form. Unlike traditional cakes, it doesn’t use eggs or milk, relying instead on brown sugar and butter for moisture and richness. The result? A dessert that feels nostalgic yet feels special enough for any occasion. It’s not overly sweet, which makes it ideal alongside coffee or tea, and it holds its shape beautifully when sliced.

Why You’ll Love This Recipe

First off, it’s ridiculously simple. No stand mixer needed—just a bowl, a whisk, and a spatula. The whole thing comes together in under 10 minutes of prep, and it bakes in a single 9-inch pan so there’s minimal cleanup. I also love that it uses pantry staples: old-fashioned oats, raisins, flour, brown sugar, and a pinch of cinnamon. No fancy ingredients or last-minute store runs required.

Another win? It’s naturally egg-free and can easily be made dairy-free by swapping the butter for coconut oil or a plant-based alternative. Plus, it’s forgiving—even if you accidentally overmix the batter or forget to grease the pan thoroughly (guilty!), it still turns out delicious. My favorite trick? Tossing the raisins in a tablespoon of flour before folding them in—this keeps them suspended evenly and prevents sinking to the bottom. And if you’re feeling fancy, a light drizzle of vanilla glaze takes it from everyday treat to dessert-table star.

How to Make Oatmeal Raisin Cookie Cake

Quick Overview

This recipe yields one 9-inch cookie cake that serves 8–10. It takes about 30 minutes total: 10 minutes to mix, 20 to bake. You’ll need a single mixing bowl, a whisk, a rubber spatula, and a greased 9-inch round cake pan (or springform pan for easy removal). The batter is thick but stirrable, and it bakes into a golden-brown disc with slightly crisp edges and a soft, chewy center.

Ingredients

You’ll need: 1 cup (2 sticks) unsalted butter, softened; 1 cup packed light brown sugar; 1/2 cup granulated sugar; 1 teaspoon vanilla extract; 1 1/2 cups all-purpose flour; 1 teaspoon baking soda; 1/2 teaspoon salt; 1 teaspoon ground cinnamon; 2 1/2 cups old-fashioned rolled oats; 1 cup raisins (light or dark); and 1 tablespoon flour (for tossing raisins, optional but recommended).

Step-by-Step Instructions

Preheat your oven to 350°F (175°C). Grease a 9-inch round cake pan and line the bottom with parchment paper for easy removal. In a large bowl, cream together the softened butter, brown sugar, and granulated sugar until smooth—about 2 minutes with a hand mixer or 3–4 minutes by hand. Stir in the vanilla.

In a separate bowl, whisk together the flour, baking soda, salt, and cinnamon. Gradually add the dry ingredients to the wet mixture, stirring just until combined. Fold in the oats. Toss the raisins with 1 tablespoon of flour (this prevents clumping), then gently fold them into the batter.

Press the thick batter evenly into the prepared pan—it won’t pour, so use your spatula or lightly greased hands to smooth the top. Bake for 18–22 minutes, until the edges are golden and the center looks set but still soft. Let cool completely in the pan before slicing. Serve as-is or with a dusting of powdered sugar or a thin vanilla glaze.

What to Serve It With

This cookie cake shines alongside a hot cup of coffee or black tea, but it’s also lovely with a scoop of vanilla Ice Cream for a warm-versus-cold contrast. For brunch, pair it with fresh fruit like sliced bananas or berries. If you’re serving it at a party, cut it into small wedges—it’s rich enough that little goes a long way.

Top Tips for Perfecting Your Oatmeal Raisin Cookie Cake

Don’t overbake! The center should look just set when you take it out—it’ll firm up as it cools. For extra chew, use 100% brown sugar and skip the granulated. If your raisins are dry, soak them in warm water for 10 minutes, then pat dry before using—they’ll stay plump and juicy. And here’s my unique tip: add 1/4 teaspoon of nutmeg to the dry ingredients. It deepens the spice profile without overpowering the cinnamon.

Storing and Reheating Tips

Store leftovers covered at room temperature for up to 3 days, or in the fridge for up to a week (it actually gets chewier!). To reheat, pop a slice in the microwave for 10–15 seconds or warm it in a 300°F oven for 5 minutes. It also freezes well—wrap individual slices in plastic wrap and freeze for up to 2 months. Thaw at room temperature or reheat directly from frozen.

Frequently Asked Questions

Final Thoughts

This oatmeal raisin cookie cake has become my go-to when I want something homemade but don’t have time for dozens of cookies. It’s humble, hearty, and full of warmth—the kind of dessert that makes people say, “Wait, this is just a cookie… baked like a cake?” And then they take a second slice. Give it a try, and I bet it’ll become one of your favorites too.

Best Soft Oatmeal Raisin Cookie Cake

4.75 from 4 votes

A decadent, cake-like oatmeal raisin cookie baked in a pan and perfect for sharing. Chewy, spiced, and loaded with plump raisins, this dessert combines the best of cookies and cake in one irresistible treat.

Print Recipe Pin Recipe

Prep Time 15 minutes mins

Cook Time 25 minutes mins

Total Time 40 minutes mins

Servings: 8

Cuisine: Chinese

Calories: 120

Ingredients Method Notes

Ingredients

  

Main Ingredients

• 1.5 cup all-purpose flour
• 1 cup old-fashioned rolled oats
• 0.5 teaspoon baking soda
• 0.5 teaspoon salt
• 1 teaspoon ground cinnamon
• 0.5 teaspoon ground nutmeg
• 0.75 cup unsalted butter softened
• 0.75 cup brown sugar packed
• 0.5 cup granulated sugar
• 2 large eggs
• 2 teaspoon vanilla extract
• 1 cup raisins

Method

 

Steps

1. Preheat oven to 350°F (175°C). Grease a 9x13-inch baking pan and line with parchment paper, leaving an overhang on the sides for easy removal.
2. In a medium bowl, whisk together flour, oats, baking soda, salt, cinnamon, and nutmeg. Set aside.
3. In a large bowl, beat softened butter, brown sugar, and granulated sugar until light and fluffy, about 3 minutes.
4. Add eggs one at a time, beating well after each addition. Mix in vanilla extract.
5. Gradually add the dry ingredients to the wet ingredients, mixing just until combined. Fold in raisins.
6. Spread the batter evenly into the prepared pan. Bake for 22–25 minutes, or until the edges are golden and a toothpick inserted into the center comes out with a few moist crumbs.
7. Cool completely in the pan on a wire rack before lifting out using the parchment overhang. Cut into squares and serve.

Notes

For extra moisture, soak raisins in warm water for 10 minutes before adding—then pat dry. Store leftovers covered at room temperature for up to 5 days or freeze for up to 3 months.