3-Ingredient Peanut Butter and Oat Dog Cookies (EASY!)
So, you’re looking for a dog treat recipe that’s simple, healthy, and doesn’t require a trip to a fancy organic grocery store? You’re in the right place.
These 3-ingredient peanut butter and oat dog cookies are so easy, it’s almost ridiculous. No complicated steps, no weird additives—just three basic ingredients you probably already have in your kitchen.
And yes, your dog will love these. Let’s get started—your dog’s probably already wagging their tail just thinking about it. 🙂
Ingredients

Drumroll, please… here’s your super complex ingredient list:
- 1 cup rolled oats (or oat flour if you’re feeling bougie)
- 1/4 cup natural peanut butter (unsweetened and xylitol-free—seriously, check the label)
- 1 egg (because cookies need structure, and we’re not here to make crumbs)
That’s it. Three ingredients. No fluff. Unless you count your dog’s fur. 😉 Optionally you can add some coconut oil too, but for now let’s stick to these three products.
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Start Training Today! 🐾Why These Ingredients?
Each one has a job, and together, they’re basically the dream team of dog cookies.
- Oats: They’re fiber-packed, easy to digest, and keep your pup feeling full longer. Plus, they’re naturally gluten-free if you care about that sort of thing.
- Peanut Butter: Dogs love it, and it’s full of protein and healthy fats. Just avoid brands with xylitol—it’s toxic to dogs.
- Egg: Acts as the binder that keeps everything together, so your cookies don’t turn into granola.
Instructions (Step-by-Step)

This recipe is so simple, you could make it with your eyes closed (but, like, don’t do that). Follow these steps and you’ll have dog cookies in no time.
- Preheat and Prep:
First, preheat your oven to 350°F (175°C). Line a baking sheet with parchment paper or grease it lightly. No parchment paper? Use a bit of butter or oil—your dog won’t care. - Mix It Up:
In a mixing bowl, combine the oats, peanut butter, and egg. Stir until everything is well mixed. If the dough feels a little dry, add a splash of water to bring it together. Too sticky? Toss in a few more oats. This isn’t rocket science; you’ve got this. - Shape the Cookies:
Scoop out small portions of dough, roll them into balls, and flatten them into cookie shapes. You can use your hands, a fork, or the back of a spoon. Perfect shapes are overrated—your dog just wants snacks. - Bake Until Golden:
Place the cookies on the baking sheet and bake for 15-20 minutes, or until the edges are firm and slightly golden. Your kitchen will smell like peanut butter heaven. Let them cool completely before serving. - Serve and Watch the Tail Wags:
Give your pup a cookie and soak in the sheer joy on their face. They might even forget about the time you accidentally stepped on their tail. (No promises, though.)

Common Mistakes
- Using Sweetened Peanut Butter:
Seriously, double-check that jar. Xylitol is toxic to dogs, and it sneaks into a lot of peanut butter brands. - Skipping the Cool-Down:
Hot cookies = sad pups. Let them cool completely before handing them over. - Overbaking:
If you bake them too long, they’ll turn into peanut butter rocks. Aim for golden, not fossilized. - Making Too Many at Once:
These don’t have preservatives, so don’t go overboard unless you plan to freeze some.
Storing Your 3-Ingredient Cookies
So, you’ve got extras? Lucky pup. Here’s how to store them:
- Room Temperature: Store in an airtight container for up to a week.
- Refrigerator: Keeps them fresh for about two weeks.
- Freezer: Freeze for up to three months. Just thaw before serving.
Pro tip: Label the container. You don’t want someone mistaking these for human cookies. (They’ll be disappointed, trust me.)
Health Benefits
Let’s break down why these cookies are more than just tasty:
- Digestive Health: Oats are gentle on the stomach and help keep things… moving.
- Protein and Healthy Fats: Peanut butter is great for energy and maintaining healthy muscles.
- Low on Junk: No sugar, no preservatives, no fillers—just wholesome goodness for your furry friend.
FAQ
1. Can I use quick oats instead of rolled oats?
Yes, quick oats work fine. They’re just smaller, so the texture will be a little smoother.
2. My dog hates peanut butter. What now?
First of all, who’s this dog? Second, swap it out for pumpkin puree or mashed banana. Both work great.
3. Can I add extras like cinnamon or parsley?
Absolutely! A pinch of cinnamon adds flavor, and parsley helps freshen breath. Just keep it simple.
4. Are these cookies safe for puppies?
Totally. Just break them into smaller pieces for tiny mouths.

Final Thoughts
Making your own dog treats isn’t just fun—it’s kind of addicting. These 3-ingredient peanut butter and oat cookies are so easy, you’ll wonder why you didn’t try this sooner. Plus, they’re healthy, affordable, and your dog will think you’re the best human ever.
So, what are you waiting for? Your pup deserves these cookies. Go grab that peanut butter and start baking! 🐾

I’ve spent 10+ years in dog training, digging into what makes dogs (and their humans) tick. At Smart Dog Learning, I share my no-nonsense, fun approach to training so you can enjoy life with a well-behaved, happy pup—no boring lectures, just practical results 😉