Peanut Butter and Banana Barkies Dog Cookies

There’s a very specific sound my dog makes when he hears the peanut butter jar open, somewhere between a whine and a groan, and it’s the reason this recipe exists in the first place.

I’d been buying him store-bought peanut butter biscuits for years before it occurred to me that the ones I liked best were basically just peanut butter, banana, and oats — three things I already had in my kitchen at all times anyway.

The first batch I baked disappeared faster than anything I’d made for him before, and “barkies” became the name my family started using for them almost as a joke, though it stuck.

They’re crunchy enough to feel like a real biscuit, sweet enough from the banana that I never need to add sugar, and simple enough that I don’t think twice about baking a batch on a random Tuesday.

If your dog already goes wild for peanut butter, 3 ingredient peanut butter dog gummies is a great chewy alternative to keep in the rotation alongside these, and homemade banana dog treat recipes is worth a look if banana turns out to be the real star of the show for your dog too.

Why Peanut Butter and Banana Work So Well Together

Peanut butter is one of the most reliable “instant yes” flavors for most dogs, and it’s often used as a wrapper for pills or a lure for training precisely because dogs respond to it so consistently.

Banana adds natural sweetness and a soft, moist texture to balance out peanut butter’s thickness, which means these cookies come together without needing any added sugar or honey.

Together they also make an easy vehicle for oats, which act as the base structure of the cookie and turn what would otherwise be a sticky mixture into something you can actually roll and cut or scoop into rounds.

Ingredients I Feel Comfortable Using

Natural peanut butter. Plain, unsweetened, and completely free of xylitol — this is the one label I always double check, since xylitol shows up in more “natural” and sugar-free peanut butters than people expect.

Ripe banana. The riper it is, the easier it mashes and the sweeter the cookies turn out.

Rolled oats, ground into flour. A quick pulse in a blender or food processor turns oats into a simple, dog-safe flour base.

Egg. Helps bind the dough together for a sturdier cookie.

If you’re building out a wider list of safe ingredients to bake with, human foods dogs can safely eat is a solid reference to keep handy.

Ingredients I Avoid

Xylitol is the single biggest thing to watch for here — it’s toxic to dogs even in small amounts and shows up under names like “birch sugar” on some peanut butter labels, so I read every jar before using it, no exceptions.

I also skip chocolate chips, raisins, and any mix-in aimed at human cookies, along with white flour, which offers nothing that oat flour doesn’t already do better for a dog’s digestion.

Peanut Butter and Banana Barkies

This is the cookie that started the whole “barkies” nickname, and it’s stayed exactly the same recipe for years because there’s genuinely nothing I’d change about it.

Ingredients

• 1 cup rolled oats, ground into flour
• 1/2 cup natural peanut butter, xylitol-free
• 1 ripe banana, mashed
• 1 large egg

Instructions

1. Preheat the oven to 350°F and line a baking sheet with parchment paper.
2. Pulse the rolled oats in a blender or food processor until they form a rough flour.
3. In a large bowl, mix the peanut butter, mashed banana, and egg until smooth.
4. Add the oat flour and stir until a thick, workable dough forms.
5. Roll the dough into small balls and flatten slightly with a fork, or roll it out and cut with a cookie cutter.
6. Bake for 12 to 15 minutes, until lightly golden on the edges.
7. Cool completely on the baking sheet before serving or storing.

How Much to Give Your Dog One or two cookies make a good everyday treat, depending on your dog’s size. Because these contain natural sugar from the banana, they’re best treated as an occasional reward rather than a daily staple.

Storage Store in an airtight container at room temperature for up to a week, or freeze for up to 3 months. They hold their texture well straight from the freezer if you’d rather serve them cold on a warm day.

My Tip I keep a stash of overripe bananas in the freezer specifically for this recipe, so I never have to wait around for one to ripen before baking a batch.

For more oven-baked options once these become a regular, simple carrot based dog treat recipes for beginners is an easy next recipe to try, and homemade pumpkin applesauce dog treats is a good fall-flavored swap when banana isn’t on hand.

Signs Your Dog Shouldn’t Have These

• Known peanut or legume allergy
• Diabetes or a vet-recommended low-sugar diet
• Digestive sensitivity to bananas or high-fiber treats

If any of these apply, check with your vet before offering this recipe, and consider a lower-sugar alternative in the meantime.

Common Problems When Making These

Why is my dough too sticky to roll? This usually means the banana was very ripe and juicy. Add a bit more oat flour, a tablespoon at a time, until the dough holds together without sticking to your hands.

Can I use almond flour instead of oat flour? Plain almond flour is generally fine in small amounts, though oat flour is the more common and budget-friendly choice for this recipe.

Why did my cookies turn out soft instead of crunchy? Smaller or thicker cookies stay softer. For a crunchier texture, flatten them more before baking and add a few extra minutes in the oven, watching closely so they don’t burn.

Can I skip the egg? Yes, a small spoonful of extra mashed banana can replace it as a binder, though the dough will be slightly softer.

More From The Pet Sphere

• 3 Ingredient Peanut Butter Dog Gummies
• Homemade Banana Dog Treat Recipes
• Simple Carrot Based Dog Treat Recipes for Beginners
• Homemade Pumpkin Applesauce Dog Treats
• 11 Vet-Friendly Frozen Dog Treat Recipes You Can Trust
• Homemade Dog Treats
• Human Foods Dogs Can Safely Eat

FAQ — Peanut Butter and Banana Barkies Dog Cookies

Can dogs eat peanut butter and banana together?
Yes, in moderation. Both are generally considered safe for dogs, and combined they make a naturally sweet, protein-rich treat as long as the peanut butter is plain and free of xylitol.

Is xylitol really that dangerous in peanut butter?
Yes — xylitol is toxic to dogs even in small amounts and can cause a rapid drop in blood sugar or liver damage. It’s sometimes labeled as “birch sugar,” so it’s worth checking the full ingredient list, not just the front of the jar.

Can I use crunchy peanut butter instead of creamy?
Yes, crunchy peanut butter works fine in this recipe and adds a bit of extra texture, though creamy blends more smoothly into the dough.

Do these cookies need to be refrigerated?
No, they store well in an airtight container at room temperature for up to a week. Refrigerating isn’t necessary, though it can slightly extend freshness.

Can I freeze the dough instead of baking it all at once?
Yes, you can portion the rolled dough balls onto a tray, freeze until solid, then transfer to a freezer bag and bake straight from frozen, adding a few extra minutes to the bake time.

Is banana safe for dogs with diabetes?
Not usually recommended. Banana’s natural sugar content makes this recipe better suited to healthy dogs without diabetes or blood sugar concerns — check with your vet before offering it otherwise.

Can puppies have these cookies?
In small amounts, generally yes, though the size and hardness of the cookie should be adjusted for smaller mouths and puppy teeth. Ask your vet first if your puppy has any health concerns.

Why did my cookies spread flat instead of holding their shape?
This usually means the dough was too wet, often from an especially ripe or large banana. Add a bit more oat flour, a tablespoon at a time, until the dough firms up before shaping.

Can I substitute the oat flour with something else?
Plain almond flour can work as a substitute in small amounts, though oat flour is generally the safer, more digestible, and more budget-friendly option for regular baking.

How many of these can I give my dog per day?
One or two cookies is a reasonable amount for most dogs as an occasional treat, but the exact number depends on your dog’s size, activity level, and overall diet — treats should stay a small portion of daily calories overall.

Final Thoughts

These barkies are proof that the treats your dog loves most don’t need a long ingredient list or any special equipment — just a ripe banana, a jar of peanut butter, and a blender for the oats. It’s one of those recipes that’s genuinely as easy the fiftieth time as it was the first.

📋 Recipe Card

Peanut Butter and Banana Barkies Dog Cookies

Crunchy, vet-friendly dog cookies made with natural peanut butter, ripe banana, and oat flour — no added sugar needed.

Prep Time	10 minutes
Bake Time	12–15 minutes
Total Time	25 minutes
Yield	18–20 small cookies
Category	Dog Treats
Method	Baking
Suitable For	Adult dogs; ask your vet first for dogs with peanut allergies, diabetes, or sensitive stomachs

Ingredients

• 1 cup rolled oats, ground into flour
• 1/2 cup natural peanut butter, xylitol-free
• 1 ripe banana, mashed
• 1 large egg

Instructions

1. Preheat oven to 350°F and line a baking sheet with parchment.
2. Grind oats into flour using a blender or food processor.
3. Mix peanut butter, banana, and egg until smooth.
4. Stir in oat flour to form a thick dough.
5. Roll into balls, flatten with a fork, and place on the baking sheet.
6. Bake 12–15 minutes until lightly golden.
7. Cool completely before serving.

Notes

• Always confirm the peanut butter is free of xylitol before using.
• Store at room temperature for up to a week, or freeze up to 3 months.
• Treat as an occasional reward due to natural sugar content.

Nutrition (per cookie, approximate) Calories: 25–35 | Sugar: naturally occurring from banana | Fat: 2g