If your dog loves a savory snack, these Homemade Sardine and Spinach Dog Biscuits are a great option. They use simple, dog-safe ingredients and bake into crunchy little treats that are easy to handle and portion. Sardines bring a strong flavor that many dogs go crazy for, while spinach adds a little extra nutrient support without making the recipe complicated.
Best of all, you can make them at home and know exactly what went into each biscuit.
This recipe is made for dogs, not people, so it skips the seasonings and extras humans usually add. It works well as an occasional treat or a small reward during training. If your dog has special dietary needs, it is always smart to check with your vet before introducing new foods.
What You’ll Need
- 1 can sardines in water, no salt added, drained and mashed
- 1 cup fresh spinach, finely chopped
- 2 cups oat flour
- 1 cup whole wheat flour, or more oat flour if needed
- 1 large egg
- 1/3 cup plain unsweetened pumpkin puree
- 2 to 4 tablespoons water, as needed
If your dog does not do well with wheat, you can use more oat flour instead.
Keep the ingredients plain and simple so the biscuits stay dog-friendly.
Step-by-Step Instructions
- Preheat your oven to 350°F and line a baking sheet with parchment paper.
- Prepare the sardines by draining them well and mashing them in a medium bowl.
- Chop the spinach finely so it mixes evenly through the dough.
- Add the egg and pumpkin puree to the sardines, then stir until combined.
- Mix in the spinach, then add the oat flour and whole wheat flour a little at a time.
- Stir until a dough forms. If the mixture feels too dry, add water one tablespoon at a time.
- Knead lightly on a floured surface until the dough holds together.
- Roll out the dough to about 1/4 inch thick.
- Cut into shapes using a small cookie cutter or slice into simple squares.
- Place biscuits on the baking sheet with a little space between each one.
- Bake for 20 to 25 minutes, until the edges start to turn golden and the biscuits feel firm.
- Cool completely before serving. The biscuits will crisp up more as they cool.
For extra crunch, turn off the oven and let the biscuits sit inside for 10 to 15 more minutes after baking.
Just keep a close eye so they do not get too dark.
Storage Instructions
Let the biscuits cool all the way before storing them. Warm treats can trap moisture and soften faster, which shortens shelf life.
- Room temperature: Store in an airtight container for up to 2 days if your kitchen is cool and dry.
- Refrigerator: Keep in a sealed container for up to 1 week.
- Freezer: Freeze for up to 2 months in a freezer-safe bag or container.
If you freeze the biscuits, separate them in small portions so you can thaw only what you need. This makes treat time easier and helps keep the rest fresh.
Why This is Good for You
These biscuits offer a practical way to give your dog a homemade snack with real ingredients.
Sardines provide protein and a rich flavor that many dogs enjoy, while spinach adds a little plant-based variety to the recipe.
The simple ingredient list also makes the biscuits easier to digest than many store-bought treats with long labels. Because you make them at home, you can control the size, texture, and amount your dog gets.
They also fit nicely into a balanced treat plan. That matters because snacks should stay small and should not crowd out your dog’s regular meals.
Common Mistakes to Avoid
- Using sardines packed in salt or oil.
Choose sardines in water with no salt added.
- Adding seasoning. Skip onion, garlic, pepper, herbs with strong oils, and any spice blends.
- Using too much flour too soon. Add it gradually so the dough does not become dry and crumbly.
- Overbaking.
Very dark biscuits can become too hard for some dogs.
- Serving big portions. Even healthy treats can add up fast, especially for small dogs.
- Skipping the cooling step. Hot biscuits can be uncomfortable and may soften in storage if packed too soon.
Another common mistake is making the biscuits too large.
For training or small dogs, smaller pieces are usually easier to manage and less messy.
Alternatives
You can make a few easy swaps if you want to adjust the recipe for your dog. Just keep everything plain and dog-safe.
- Flour options: Use all oat flour, or try brown rice flour for a slightly different texture.
- Vegetable swaps: Replace spinach with finely chopped parsley, shredded carrot, or a little mashed zucchini.
- Protein swap: If your dog does not enjoy sardines, try plain canned salmon in water or cooked shredded chicken.
- Texture changes: Roll the dough thinner for crunchier biscuits or thicker for a softer center.
You can also press the dough into a small baking pan and cut it into cubes after baking. That works well if you want quick, even pieces without using cookie cutters.
FAQ
How many Homemade Sardine and Spinach Dog Biscuits can I give my dog?
Start with one small biscuit and see how your dog handles it.
For larger dogs, you may be able to offer a few as treats, but the right amount depends on your dog’s size, daily food intake, and overall treat budget.
Can I use fresh sardines instead of canned sardines?
Yes, as long as the sardines are plain, fully cooked, and free from seasoning, bones that may be too sharp, and added salt. Canned sardines in water are usually the easiest option because they are ready to use and simple to measure.
Are spinach biscuits safe for all dogs?
Spinach is a dog-safe ingredient in small amounts for many dogs. If your dog has a sensitive stomach or you are trying spinach for the first time, use a small batch and watch how they respond.
Can I freeze these biscuits?
Yes.
These biscuits freeze well for up to 2 months. Freeze them in small portions so you can thaw only what you need and keep the rest fresh.
How do I know if the dough is the right texture?
The dough should feel firm enough to roll out without sticking too much, but not so dry that it falls apart. If it crumbles, add a little water.
If it feels sticky, add a bit more flour.
Can puppies eat these biscuits?
Puppies can sometimes enjoy small homemade treats like these, but keep portions tiny and make sure the texture is easy to chew. If your puppy is very young or has a sensitive diet, introduce new treats slowly.
Homemade treats are a nice way to add variety to your dog’s routine without a lot of fuss. These Sardine and Spinach Dog Biscuits are simple, flavorful, and easy to make in batches, which makes them a handy choice for everyday treat time.
