Homemade cat cake recipe with mackerel

Name: Homemade cat cake recipe with mackerel
Prep time: 15 min
Cook time: 20 min
Total time: 35 min
Yield: 4 small slices
Cuisine: x
Ingredients: 1 can of mackerel in water (drained); 1/4 cup oat flour (or ground oats); 1 egg; 1 tablespoon plain, unsweetened pumpkin puree; 1 teaspoon olive oil (optional)

The first time I tried making a homemade cat cake with mackerel for my picky tabby, Whiskers, it was a disaster. I thought, “How hard could it be?” Well, turns out, pretty hard. I accidentally used too much fish, and the whole thing fell apart when I tried to slice it. Whiskers still ate it—because, let’s be real, cats love fish—but it looked like a pile of crumbs. After a few more tries (and one time forgetting to bake it at all), I finally nailed it. Now, Whiskers gets this cake every year for his “gotcha day,” and he goes absolutely nuts for it.

Recipe Card

Recipe Title	Homemade cat cake recipe with mackerel
Servings	4 small slices (enough for one cat with leftovers)
Prep Time	15 minutes
Cooking Time	20 minutes
Calories	About 60 per slice

Ingredients

1 can of mackerel in water (drained)
1/4 cup oat flour (or ground oats)
1 egg
1 tablespoon plain, unsweetened pumpkin puree
1 teaspoon olive oil (optional)

The mackerel is the star here—cats go wild for it, and it’s packed with protein. The first time I used tuna instead, Whiskers gave me the stink eye. Oat flour is great because it’s gentle on their tummies, and pumpkin helps with digestion. The egg binds everything together, but don’t skip the pumpkin—it adds moisture, and trust me, dry cat cake is a sad cat cake.

Directions

Preheat your oven to 350°F (175°C).
In a bowl, mash the mackerel with a fork until it’s flaky.
Add the oat flour, egg, pumpkin, and olive oil (if using). Mix well.
Pour the mixture into a small, greased baking dish or silicone mold.
Bake for 20 minutes or until firm.
Let it cool completely before slicing.

Here’s where I messed up big time once: I didn’t let it cool. Hot fish cake = unhappy cat. Whiskers took one sniff and walked away like I’d insulted his ancestors. Now, I pop it in the fridge for a bit before serving. Also, if your mixture looks too wet, add a little more oat flour. Too dry? A splash of water or more pumpkin does the trick.

Whiskers goes nuts for this cake, but the first few tries were hit or miss. One time, I added a tiny bit of catnip on top, and he licked the plate clean. Another time, I overbaked it, and it turned into a fishy brick—lesson learned. The pumpkin keeps it moist, and the mackerel makes it irresistible. Next time, I might try shaping it into little fish-shaped molds for fun.

This cake isn’t just a treat—it’s a healthy snack. Mackerel is full of omega-3s, which are great for their coat, and the pumpkin helps with digestion. If your cat has a sensitive stomach, skip the olive oil. And if they’re allergic to fish (rare but possible), this isn’t the recipe for them.

Nutrition Info (per serving)

Calories	Carbs	Fat	Protein
60	3g	2g	7g

I was surprised how balanced this is for a cat snack! The protein keeps them full, and the carbs are minimal. If your cat’s on a diet, you can cut the slices smaller. Just don’t overdo it—this is a treat, not a meal replacement. And always check with your vet if your cat has special dietary needs.

Ingredient Swaps

Ingredient	Substitution
Mackerel	Canned salmon or sardines (in water, no salt)
Oat flour	Ground quinoa or rice flour
Pumpkin	Plain mashed sweet potato (no spices)

I tried salmon once, and Whiskers approved, but sardines made him turn up his nose. Rice flour works fine, but it’s a bit denser. Sweet potato is a great swap for pumpkin, but go easy—too much can be too sweet for some cats. Experiment, but always keep it pet-safe.

Tips

Let it cool completely before serving—hot fish is a no-go.
Use silicone molds for easy removal (and cute shapes!).
Store leftovers in the fridge for up to 3 days.
Skip the salt and spices—cats don’t need them.
If your cat’s picky, sprinkle a little catnip on top.

Oh man, the first time I used a regular baking dish, the cake stuck like glue. Silicone molds are a game-changer—pop it right out, no mess. And storing it? Yeah, I left it out once, and let’s just say Whiskers wasn’t the only one interested. The dog got into it, and I spent the next hour cleaning fishy paw prints off the floor.

FAQ

Can I freeze this cake?
Yep! Wrap slices tightly and freeze for up to a month. Thaw in the fridge before serving. Just don’t microwave it—cold is better for cats.

My cat didn’t like it. What now?
Don’t take it personally. Cats are weird. Try a different fish or skip the pumpkin. Or, like me, bribe them with catnip.

Can I use fresh mackerel?
Sure, but cook it first—no raw fish for kitties. And remove all bones. Canned is easier, though, and cheaper.

That’s everything I know about making homemade cat cake with mackerel for Whiskers! Give it a shot, and if your cat ignores it, well, welcome to the club. Mine still gives me the side-eye sometimes, but when he’s in the mood, he devours it. Happy baking!