I love making wholesome, homemade treats for my dog, and these air fryer sardine crackers are one of my dog’s favorite recipes.
They’re packed with natural flavor and nutrients from sardines, and since I skip unnecessary fillers, I know exactly what my pup is eating.
If you’re looking for an easy, healthy way to spoil your furry friend, these air fryer sardine crackers for dogs are a great option to try.
Ingredients
- 1 can (3.75 oz / 106 g) sardines in water, drained and bones soft (no added salt)
- 1 cup oat flour (or whole wheat flour if your dog tolerates wheat)
- 1 large egg
- 1 tablespoon plain pumpkin puree (no added sugar or spices)
- 1 teaspoon olive oil (optional, for a slightly richer dough)
- 1 tablespoon water (adjust as needed for dough consistency)

Instructions
- Preheat the air fryer to 350°F (175°C). Line a work surface with parchment paper for easy cleanup.
- Drain the sardines and flake them with a fork, leaving small soft bones if present. Small bones provide calcium and are usually soft in canned sardines.
- In a bowl, mix the flaked sardines, oat flour, egg, pumpkin puree, and olive oil. Add water a little at a time until the mixture forms a firm, slightly tacky dough.
- Place the dough between two sheets of parchment paper and roll to about 1/8 inch thickness. For smaller dogs, roll thinner and cut smaller shapes.
- Use a cookie cutter or knife to cut crackers into bite-sized pieces. Transfer the parchment with crackers into the air fryer basket.
- Air fry for 8 to 12 minutes, checking at 8 minutes. Flip the crackers halfway if your air fryer model needs it for even crisping.
- Remove when crackers are golden and firm. Let cool completely on a wire rack before serving to your dog.
How to Store
Store cooled crackers in an airtight container in the fridge for up to 5 days.
For longer storage, freeze in a single layer on a baking sheet, then transfer to a freezer bag for up to 3 months.
Thaw in the fridge before serving and warm briefly in the air fryer or microwave if you want them crisp again.
Portion treats into small containers or bags so you can grab single servings without exposing the whole batch.
Health Benefits
Sardines supply high-quality protein and natural omega-3 fatty acids, which support skin, coat, and joint health.
Oat flour adds digestible fiber and gentle carbohydrates for energy. Pumpkin contributes soluble fiber and supports digestion.
The recipe avoids heavy fats and excess salt so it stays appropriate as an occasional treat.
Use these crackers as part of a balanced feeding plan rather than a daily replacement for complete dog food.
Common Mistakes to Avoid
- Do not add salt, onion, garlic, or other seasonings that are unsafe for dogs.
- Avoid canned sardines in oil with added salt or flavorings. Choose plain sardines in water.
- Don’t overwork the dough. Overmixing can make crackers tough instead of crisp.
- Watch portion size. These are treats or toppers, not meal replacements for most dogs.
- Do not feed cracked or very hard crackers to small dogs without checking they can chew them safely.
Alternatives
- Protein swaps: Replace sardines with canned salmon (boneless, no salt) for a similar omega-3 profile.
- Flour choices: Use rice flour or chickpea flour if your dog has wheat or oat sensitivities.
- Texture variations: Make softer biscuits by reducing cooking time or adding a little more pumpkin for moisture.
- Flavor additions: Add a teaspoon of plain mashed sweet potato or a sprinkle of dried parsley for variety, but avoid salt and spices.
FAQ
How many crackers can I give my dog per day?
Serve based on your dog’s size and daily calories. For small dogs, 1 to 3 crackers as a treat is plenty.
For larger dogs, 3 to 6 crackers split through the day works. Adjust overall food portions to account for treat calories.
Are sardines safe for puppies?
Yes, sardines can be safe for puppies in small amounts. Introduce them gradually and watch for stomach upset.
Check with your veterinarian if your puppy has special dietary needs.
Can I use sardines in oil instead of water-packed sardines?
You can use sardines in oil, but drain them well and rinse to remove excess oil and any added salt. Water-packed sardines are a simpler, lower-fat choice.
Can these crackers replace my dog’s regular food?
No. These crackers are treats or meal toppers and do not provide a balanced complete diet by themselves.
Use them to supplement a balanced commercial diet or a vet-approved homemade meal plan.
What if my dog has a fish allergy?
Do not give this recipe if your dog has a known fish allergy. Substitute with a safe protein like cooked chicken or turkey and adjust moisture and cooking time as needed.
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