There’s something irresistibly comforting about a slice of Grandma’s Oatmeal Cake. This delightful treat is not just any ordinary cake; it’s a moist, rich, and flavorful masterpiece that fills your home with warm memories and tantalizing aromas. Have you ever considered that the secret behind Grandma’s best recipes often lies in simplicity? The best part? Making this oatmeal cake is a breeze, perfect for those busy family days when you need a sweet pick-me-up without a lot of fuss.
Did you know that oatmeal cake has roots in Southern cooking? It’s been a beloved recipe passed down through generations, much like the cherished family gatherings surrounding it. Whether you share it with family or friends, this cake is sure to make their hearts flutter. If you enjoy recipes like our Lemon Drizzle Cake or classic Chocolate Chip Cookies, you’ll absolutely love Grandma’s Oatmeal Cake. So, grab your mixing bowl, and let’s create some sweet memories together!
What is Grandma’s Oatmeal Cake?
Ah, the whimsical name “Grandma’s Oatmeal Cake”! It makes you wonder—why oatmeal? Is it because Grandma knew oatmeal was a magical ingredient that brings everyone together? Or maybe it’s because she had a secret stash of oatmeal hidden away for those rainy days? They say, “The way to a man’s heart is through his stomach,” and if this cake doesn’t win hearts, I don’t know what will! With a name like that, how can you resist trying it for yourself? Dive into this family favorite, and who knows, it might just become your next go-to dessert!
Why You’ll Love Grandma’s Oatmeal Cake
There are three standout aspects to Grandma’s Oatmeal Cake that make it truly special. First, its moist and tender texture, enhanced by the oats, gives each bite a delightful chewiness, making it incredibly satisfying. Second, making this cake at home is a cost-saving winner. With simple pantry ingredients like oats, flour, and sugar, you won’t break the bank putting this together. Finally, let’s talk about the toppings—a decadent cream cheese frosting or a sprinkle of nuts brings a surprisingly delightful crunch. If you’re a fan of our Stay-At-Home Carrot Cake, you’ll find Grandma’s Oatmeal Cake just as comforting but with a unique spin. So, are you ready to bake up some goodness?
How to Make Grandma’s Oatmeal Cake
Quick Overview
Making Grandma’s Oatmeal Cake is as easy as pie—well, easier! With a preparation time of just 15 minutes and a baking time of around 30, you’ll have a delicious cake ready to serve in no time. This recipe is ideal for both novice bakers and seasoned pros, thanks to its straightforward steps and simple ingredients. Let’s dive into the details!
Key Ingredients for Grandma’s Oatmeal Cake
Here’s what you’ll need to whip up this delightful dessert:
- 1 cup rolled oats
- 1 cup boiling water
- 1 cup granulated sugar
- 1 cup brown sugar, packed
- ½ cup vegetable oil
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 ½ cups all-purpose flour
- 1 teaspoon baking soda
- 1 teaspoon baking powder
- ½ teaspoon salt
- 1 teaspoon ground cinnamon
Step-by-Step Instructions
- Preheat the Oven: Preheat your oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan.
- Prepare the Oats: In a bowl, combine the rolled oats and boiling water. Let it sit for about 20 minutes to soften.
- Mix Wet Ingredients: In a separate bowl, whisk together the granulated sugar, brown sugar, vegetable oil, eggs, and vanilla extract until well combined.
- Combine Mixtures: Add the softened oats to the wet ingredients and stir until combined.
- Sift Dry Ingredients: In another bowl, sift together the flour, baking soda, baking powder, salt, and cinnamon.
- Combine Dry and Wet: Gradually add the flour mixture to the wet ingredients, mixing until just combined. Be careful not to overmix!
- Bake: Pour the batter into the prepared baking pan and smooth the top. Bake for 30-35 minutes or until a toothpick inserted in the center comes out clean.
- Cool and Frost: Once baked, let the cake cool completely before adding your favorite cream cheese frosting or simply dusting with powdered sugar.
What to Serve Grandma’s Oatmeal Cake With
Serve Grandma’s Oatmeal Cake alongside a scoop of vanilla ice cream for the ultimate dessert experience. You can also pair it with a dollop of whipped cream and fresh berries for a refreshing touch. For a more traditional Southern feel, brew a pot of sweet tea for sipping alongside this scrumptious treat.
Top Tips for Perfecting Grandma’s Oatmeal Cake
To ensure your cake turns out perfect, here are some handy tips:
- Oats: Use rolled oats instead of instant oats for a better texture.
- Mixing: Be cautious not to overmix the batter, as this can lead to a denser cake.
- Frosting: Feel free to experiment with different toppings, such as chopped nuts or shredded coconut, for added flavor and texture.
- Testing: Always test the cake for doneness with a toothpick—if it comes out clean, it’s ready!
Storing and Reheating Tips
To store Grandma’s Oatmeal Cake, keep it in an airtight container at room temperature for about 2 days. If you need to store it longer, wrap it tightly with plastic wrap and refrigerate for up to a week. For even longer storage, slice and freeze the cake in individual pieces for up to 3 months. When ready to enjoy, simply thaw at room temperature or pop it in the microwave for a few seconds for that fresh-out-of-the-oven goodness!
There you have it—Grandma’s Oatmeal Cake is not only a delightful treat but also an easy recipe to whip up for any occasion. So, gather your ingredients and bring a piece of nostalgia into your kitchen today. Enjoy every slice!

Grandma’s Oatmeal Cake
Ingredients
Main ingredients
- 1 cup rolled oats Use rolled oats for better texture.
- 1 cup boiling water To soak the oats.
- 1 cup granulated sugar
- 1 cup brown sugar, packed
- ½ cup vegetable oil
- 2 large eggs
- 1 teaspoon vanilla extract
- 1 ½ cups all-purpose flour
- 1 teaspoon baking soda
- 1 teaspoon baking powder
- ½ teaspoon salt
- 1 teaspoon ground cinnamon
Instructions
Preparation
- Preheat your oven to 350°F (175°C). Grease and flour a 9×13-inch baking pan.
- In a bowl, combine the rolled oats and boiling water. Let it sit for about 20 minutes to soften.
- In a separate bowl, whisk together the granulated sugar, brown sugar, vegetable oil, eggs, and vanilla extract until well combined.
- Add the softened oats to the wet ingredients and stir until combined.
- In another bowl, sift together the flour, baking soda, baking powder, salt, and cinnamon.
- Gradually add the flour mixture to the wet ingredients, mixing until just combined. Be careful not to overmix!
Baking
- Pour the batter into the prepared baking pan and smooth the top.
- Bake for 30-35 minutes or until a toothpick inserted in the center comes out clean.
Cooling and Serving
- Once baked, let the cake cool completely before adding your favorite cream cheese frosting or simply dusting with powdered sugar.
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