Peanut Butter, Banana & Oat Dog Cake Recipe (3 Ingredients)

Last updated on January 31st, 2026 at 07:19 am

Let’s be real—who doesn’t want to spoil their pup with something homemade? We love giving our dogs treats that feel special, and this Peanut Butter, Banana, and Oat Dog Cake does just that.

It’s not just easy to make, but it’s made from only three ingredients—because let’s face it, no one has time for a complicated recipe when you’re trying to make your dog the happiest pooch in town.

It’s quick, it’s delicious, and yes, your dog will totally appreciate it.

What Makes This Recipe Shine

This dog cake is perfect for pet owners who want to keep it simple but still show some serious love to their four-legged friends. Seriously, three ingredients? That’s it. It’s like the recipe gods were just like, “let’s make this easy, but still awesome.” The best part?

Each ingredient serves a purpose—peanut butter for protein and flavor, banana for sweetness and potassium, and oats for fiber. If your dog has any sort of tummy trouble, these ingredients are gentle and nutritious.

And it’s so easy to whip up that it doesn’t even feel like cooking. I’m talking about a few minutes of prep and then baking magic happens. No messing with complicated instructions, no endless ingredient lists.

This dog cake is foolproof—unless, of course, your dog decides to “help” you during the baking process.

Ingredients You’ll Need

• 1 ripe banana
• 1/2 cup peanut butter (preferably unsweetened and unsalted)
• 1/2 cup rolled oats

Yes, just three ingredients. The simplicity is what makes it brilliant. No fancy additives or preservatives here, just natural goodness your dog will love.

Step-by-Step Instructions

Step 1: Preheat the oven

Get that oven to a toasty 350°F (175°C). We need it nice and warm for the cake magic to happen.

Step 2: Mash the banana

Peel your banana and mash it in a bowl. This is the easy part—you want it smooth, but a few small chunks are perfectly fine. Those will add a bit of texture for your dog, and let’s be honest, they’ll enjoy it even more that way.

Step 3: Mix in the peanut butter

Once your banana’s all mashed up, stir in the peanut butter. The peanut butter not only adds a flavor bomb to the cake but also gives your pup a bit of protein, so it’s not all just sugar and carbs. Make sure the peanut butter you use doesn’t have any added salt or sugar—just the good stuff.

Step 4: Stir in the oats

Now, throw in your rolled oats and mix everything together. You’ll get a thick batter that’s easy to scoop. This is the texture we want—thick enough to hold its shape but still soft enough for your pup to enjoy. If the mix feels too dry, add a tiny bit of water, but generally, it should come together nicely.

Step 5: Bake it

Spoon the mixture into a greased muffin tin or a small baking dish. Bake it for about 15-20 minutes, depending on the size of your cake or muffin tin. You’ll know it’s done when the edges start to turn golden brown and a toothpick inserted comes out clean. Don’t worry if it’s a little moist in the center—it’ll firm up as it cools.

Step 6: Let it cool

Allow the cake to cool completely before serving it to your dog. Trust me, you don’t want to burn their tongue. Once it’s cool, it’s ready to be devoured!

Common Mistakes to Avoid

1. Overmixing the batter – You want to mix until everything is just combined. Over-mixing can make the dough dense, and while that’s not the end of the world, we want a light, fluffy cake.
2. Using sweetened or salted peanut butter – This is a big one. Don’t give your pup any extra sugar or salt. Stick to plain peanut butter—your dog’s kidneys will thank you.
3. Not waiting for it to cool – We’ve all been there, trying to feed the dog before the cake cools, and next thing you know, you’re cleaning up a mess. Wait until it cools off!

Alternatives & Substitutions

• Oats – If you don’t have oats, you can substitute them with whole wheat flour. It won’t give the exact texture but will work just fine.
• Peanut Butter – You can try almond butter or cashew butter if you’re worried about allergies, but keep the same unsweetened and unsalted rule.
• Banana – No banana? No problem! You can use pumpkin puree or even sweet potato puree for a different flavor and texture.

This recipe is flexible, so if you don’t have something, improvise. It’s all about giving your pup a tasty, safe treat.

FAQ (Frequently Asked Questions)

How long can I store this dog cake?

You can keep this cake in an airtight container in the fridge for up to 5 days. You can also freeze it for up to 3 months—just defrost it when you’re ready to spoil your dog again.

Can I make this cake with a dog-safe frosting?

Absolutely! If you want to go the extra mile, you can top the cake with a dog-safe yogurt frosting. Simply mix plain, unsweetened yogurt with a little bit of peanut butter and spread it on top. Your dog will be in heaven!

Is this cake suitable for all dogs?

This recipe is great for most dogs, but if your dog has allergies or dietary restrictions, be sure to check with your vet before giving it a try. It’s always better to be safe!

Can I make this cake in a large batch?

You can double or triple the recipe if you’re having a dog party (or if your dog just deserves a lot of cake). Just be sure to adjust your baking time slightly.

How can I tell if my dog likes it?

If your dog does that little happy dance or paws at your leg when you bring it out, you’ve nailed it. If they give you the side-eye, you might need to try a different flavor.

Final Thoughts

This Peanut Butter, Banana & Oat Dog Cake is as easy as it gets, and trust me, your dog will appreciate the effort you put into it. It’s simple, quick, and full of love—everything a dog cake should be.

Plus, you can feel good knowing it’s made with wholesome ingredients that won’t hurt your pup.

So go ahead, spoil your dog with this delicious cake and enjoy watching them scarf it down. Just don’t expect them to save any for later!