Nothing beats the look on my pup’s face when he realizes I’ve baked something just for him. These crunchy peanut butter and oat cookies with banana and flaxseed have become his absolute favorite—and honestly, they’re so easy to make, I find myself whipping up a batch almost weekly. No mystery ingredients, no weird additives—just simple, wholesome stuff you probably already have in your pantry. My dog, Max, goes nuts for them (pun totally intended), and I love knowing exactly what’s going into his treats. Trust me, once you see how much your pup loves these, store-bought biscuits just won’t cut it anymore!

Why You’ll Love These Crunchy Peanut Butter and Oat Cookies for Dogs with Banana and Flaxseed
First off, these cookies are ridiculously easy to make—I’m talking 4 ingredients and 15 minutes in the oven. No fancy equipment, no fuss. Just simple, good-for-them stuff: oats for fiber, banana for sweetness, peanut butter for that irresistible flavor dogs go crazy for, and flaxseed for a little omega-3 boost. My Max does his happy dance the second he smells them baking.
What I really love? You probably have everything you need right now. That half-squished banana on your counter? Perfect. Half-empty peanut butter jar? Ideal. And unlike store-bought treats with unpronounceable ingredients, you’ll recognize every single thing going into these. Plus, that satisfying crunch? Total doggy bliss.
Ingredients for Crunchy Peanut Butter and Oat Cookies for Dogs with Banana and Flaxseed
Okay, let’s talk ingredients—this is where the magic starts! You’ll need just a handful of simple things, and I promise, your pup will be licking their chops in anticipation. Here’s the lineup:
- 1 cup oats – Regular old-fashioned rolled oats work best for that perfect crunch.
- 1/2 cup peanut butter – Must be unsalted and unsweetened (and double-check for xylitol—it’s toxic to dogs!).
- 1 ripe banana – The spottier, the better! Mash it up nice and smooth.
- 1 tablespoon flaxseed – A little health boost for their coat and tummy.
- 1/4 cup water – Just enough to bring it all together without making it sticky.
See? Nothing fancy. Just wholesome, pup-friendly goodness. Now grab that banana and let’s get mixing!

How to Make Crunchy Peanut Butter and Oat Cookies for Dogs with Banana and Flaxseed
Once you’ve got your ingredients ready, it’s time to get baking! These cookies come together so quickly, your pup will be drooling before you know it. Here’s how to make them step by step:
Step 1: Preheat and Prep
First, crank your oven to 350°F (175°C) and line a baking sheet with parchment paper. Trust me, this makes cleanup a breeze—and keeps the cookies from sticking!
Step 2: Mix Ingredients
Grab a big bowl and mash that banana until it’s smooth and creamy. Then, add the peanut butter, oats, flaxseed, and water. Mix it all together until it forms a thick, slightly sticky dough. Don’t worry if it’s not perfect—your dog won’t care!
Step 3: Shape and Bake
Roll the dough into small balls (about the size of a walnut) and place them on your prepared baking sheet. Flatten each one gently with your fingers—they’ll puff up a bit as they bake. Pop them in the oven for 15 minutes, or until they’re golden and firm to the touch.

Step 4: Cool and Serve
Let the cookies cool completely on the baking sheet before serving. I know it’s tempting to hand one over right away, but hot cookies can be a no-no for pups. Once they’re cool, watch your dog’s tail go wild!
Tips for Perfect Crunchy Peanut Butter and Oat Cookies for Dogs with Banana and Flaxseed
Here’s my tried-and-true advice for making these treats foolproof (and pup-approved every time!): Always check your peanut butter label—xylitol is a sneaky, dangerous ingredient for dogs. Want extra crunch? Bake a few minutes longer. For softer cookies, reduce the time slightly. And if your dough feels too sticky? A sprinkle of extra oats will fix it right up!
Storage and Reheating
These cookies keep like a dream! Just pop them in an airtight container—they’ll stay fresh and crunchy for up to a week at room temperature. No reheating needed (though my Max happily eats them straight from the fridge if I forget to put them away!).
Variations for Crunchy Peanut Butter and Oat Cookies for Dogs with Banana and Flaxseed
Got a picky pup or just want to switch things up? Try swapping the banana for unsweetened pumpkin puree—it’s just as moist and dogs love it! You can also toss in a teaspoon of cinnamon or swap flaxseed for chia seeds. Max goes nuts for shredded carrot bits mixed in—extra crunch, extra fun!
Nutritional Information
These cookies are packed with wholesome ingredients, but remember—nutritional values are just estimates and can vary based on the brands you use. Always check with your vet if you have specific dietary concerns for your pup!
Frequently Asked Questions
Can puppies eat these cookies?
Absolutely! These cookies are puppy-friendly, but start with small portions since puppies have smaller tummies. Always check with your vet, especially if your pup has specific dietary needs.
Can I use almond butter instead of peanut butter?
Sure! Just make sure it’s unsalted, unsweetened, and free of xylitol. Dogs love almond butter just as much as peanut butter, so it’s a great swap.
How many cookies can I give my dog?
Treats should make up no more than 10% of your dog’s daily diet. For most dogs, 1-2 cookies a day is perfect. Adjust based on their size and activity level!
Can I freeze these cookies?
Yes! They freeze beautifully. Just store them in an airtight container or freezer bag for up to 3 months. Thaw at room temperature before serving.
What if my dog has allergies?
If your dog has food sensitivities, check with your vet first. You can swap ingredients like using pumpkin instead of banana or skipping flaxseed if needed.

Looking for more dog treat inspiration? Check out these dog treat recipes for more ideas!
Print“3-Ingredient Crunchy Peanut Butter Dog Cookies Your Pup Will Devour”
Healthy homemade cookies for dogs with peanut butter, oats, banana, and flaxseed.
- Prep Time: 10 minutes
- Cook Time: 15 minutes
- Total Time: 25 minutes
- Yield: 12 cookies
- Category: Dog Treats
- Method: Baking
- Cuisine: Pet Food
- Diet: Vegetarian
Ingredients
- 1 cup oats
- 1/2 cup peanut butter (unsalted, unsweetened)
- 1 ripe banana
- 1 tablespoon flaxseed
- 1/4 cup water
Instructions
- Preheat oven to 350°F (175°C).
- Mash banana in a bowl.
- Mix peanut butter, oats, flaxseed, and water with banana.
- Roll dough into small balls and flatten on baking sheet.
- Bake for 15 minutes or until golden.
- Cool before serving.
Notes
- Store in airtight container for up to a week.
- Check with vet if your dog has allergies.