A birthday is the perfect excuse to bake something special for your dog. This homemade dog birthday cake is a small two-layer cake made with banana, grated carrot, oat flour and egg, then frosted with a thick, dog-safe Greek yogurt and peanut butter frosting. It looks like a real celebration cake, slices cleanly and is gentle enough for most dogs to enjoy in small portions.
Below you will learn exactly how to make it, from mixing the batter and baking the layers to stacking and frosting, plus how to slice it into sensible portions, how to store leftovers and how to make a smaller “smash cake” for little dogs.
Quick Facts
- Prep time: 20 minutes
- Bake time: 25–30 minutes
- Oven: 350°F (175°C)
- Cake size: Two 4-inch (10 cm) layers, or one 6-inch (15 cm) cake
- Servings: About 8 dog-size slices
- Frosting: Greek yogurt, peanut butter and tapioca starch
Ingredients That Make This Cake Dog-Safe
Ripe banana and grated carrot give natural sweetness and moisture, so there is no added sugar. Oat flour keeps the crumb tender, and egg holds it together. A little coconut oil adds richness. Baking powder is used in a small amount to give the cake lift; it is a normal baking ingredient at this quantity.
The frosting is just plain unsweetened Greek yogurt, a spoonful of xylitol-free peanut butter and tapioca starch to help it hold its shape. It is much lighter than buttercream and contains no powdered sugar.
What You Need
- Two 4-inch (10 cm) round cake pans or ramekins (or one 6-inch / 15 cm pan)
- Parchment paper and a little coconut oil for greasing
- Mixing bowls, whisk and spatula
- Box grater for the carrot
- A small offset spatula or butter knife for frosting
Banana Carrot Dog Birthday Cake
Ingredients
- 1 1/2 cups (180 g) oat flour
- 1 tsp baking powder
- 2 ripe bananas, mashed (about 3/4 cup / 180 g)
- 1/2 cup (55 g) finely grated carrot
- 2 large eggs
- 2 tbsp (28 g) coconut oil, melted
- 1/4 cup (60 ml) water
- Frosting: 3/4 cup (180 g) plain unsweetened Greek yogurt, 2 tbsp natural, unsalted peanut butter with no xylitol (check the label for “xylitol” or “birch sugar”), 2 tbsp tapioca starch
- To decorate (optional): a few blueberries and one small homemade dog biscuit
Instructions
- Heat the oven to 350°F (175°C). Grease two 4-inch (10 cm) pans and line the bases with parchment.
- In a bowl, whisk the oat flour and baking powder.
- In a second bowl, whisk the mashed banana, eggs, coconut oil and water until smooth, then stir in the grated carrot.
- Fold the dry ingredients into the wet ingredients until just combined. Do not overmix.
- Divide the batter evenly between the pans and smooth the tops.
- Bake for 25–30 minutes, until the tops spring back and a toothpick comes out clean (a single 6-inch cake needs 30–35 minutes).
- Cool in the pans for 10 minutes, then turn out onto a rack and cool completely, about 1 hour. Warm cake will melt the frosting.
- Make the frosting: whisk yogurt, peanut butter and tapioca starch until thick and smooth. Chill for 15 minutes.
- Level the cake tops with a serrated knife if domed. Place one layer on a plate, spread with a third of the frosting, top with the second layer and cover the top and sides with the rest.
- Decorate with blueberries and a dog biscuit. Chill for 30 minutes before slicing.
Storage
Refrigerate the frosted cake, covered, for up to 3 days. Unfrosted layers can be wrapped and frozen for up to 2 months; thaw in the fridge overnight and frost on the day.
How Much Cake Should Your Dog Eat?
Even a dog-friendly cake is a rich treat. Serve a thin slice on the day and save the rest. As a guide, a small dog might have a slice about the size of a tablespoon, a medium dog two or three tablespoons, and a large dog a slice roughly the size of a deck of cards. Keep celebration treats and everyday treats together under about 10% of the day’s calories, and reduce dinner slightly if needed.
Variations
- Pumpkin cake: replace the bananas with 3/4 cup (180 g) plain unsweetened pumpkin puree.
- Apple cake: replace the carrot with 1/2 cup grated apple, cored and seeds removed.
- Peanut-free: leave peanut butter out of the frosting and add 1 extra tablespoon of tapioca starch.
- Pupcakes: bake the batter in a 12-cup mini muffin tin for 14–16 minutes.
Smash Cake for Small Dogs
Halve the recipe and bake it in a single 4-inch (10 cm) ramekin for 22–25 minutes. Frost the top only. This makes a cute photo-friendly cake that you can cut into four portions over several days.
Common Mistakes to Avoid
Frosting a warm cake: yogurt frosting slides off anything above room temperature, so wait the full hour. Overmixing the batter: stir only until the flour disappears, or the cake turns dense and rubbery. Using under-ripe bananas: pale bananas make a bland, dry cake. Swapping in human ingredients: skip chocolate, cocoa, sugar, store-bought frosting and sprinkles, and never use peanut butter that contains xylitol. Leaving it out at the party: yogurt frosting should not sit at room temperature for more than about two hours.
Tips for a Great Party Cake
Use very ripe bananas with brown spots for the best flavor. Grate the carrot finely so it melts into the crumb. Make sure the cake is completely cool before frosting, and keep the decorated cake in the fridge until the party starts. If you use a candle for photos, remove it before your dog gets anywhere near the cake.
Need party favors? Our how to make crunchy homemade dog biscuits and homemade peanut butter dog treats with simple ingredients pack nicely into gift bags.
Dog Safety Notes
- Peanut butter: use only natural, unsalted peanut butter with no xylitol (check the label for “xylitol” or “birch sugar”). Choose unsalted and unsweetened.
- Never add: chocolate or cocoa, grapes, raisins or currants, onion, garlic, chives or leeks, macadamia nuts, nutmeg, alcohol, raw yeast dough, cooked bones, added salt or sugar, or artificial sweeteners.
- Fruit and veg prep: remove apple cores and seeds, use seedless watermelon without rind, and use plain unsweetened pumpkin puree (not pumpkin pie filling) and plain unsweetened yogurt.
- Portions: treats should make up no more than about 10% of your dog’s daily calories. Cut pieces to suit your dog’s size and supervise chewing.
- Check with your vet before introducing new foods if your dog has allergies, a sensitive stomach, diabetes, pancreatitis, kidney disease or is on a prescription diet. Introduce one new treat at a time.
Frequently Asked Questions
Can dogs eat regular birthday cake?
No. Regular cake contains sugar, butter and often chocolate, raisins or xylitol-sweetened frostings. Bake a dog-specific cake instead.
What frosting is safe for a dog cake?
Plain unsweetened Greek yogurt, optionally with a little xylitol-free peanut butter or pumpkin, thickened with tapioca starch. Avoid sugar frostings and cream cheese in large amounts.
Can I make the dog birthday cake ahead of time?
Yes. Bake and freeze the layers up to 2 months ahead, thaw overnight in the fridge and frost on the day.
Is baking powder safe in dog cakes?
Small amounts used in baking are generally considered fine. Never let your dog eat baking powder or baking soda straight from the container.
More Homemade Dog Treat Recipes
- 10 Easy Pumpkin Dog Treat Recipes
- Homemade Peanut Butter Dog Treats With Simple Ingredients
- How to Make Crunchy Homemade Dog Biscuits
- Homemade Apple and Carrot Dog Treats
This article is for general information and is not a substitute for advice from your veterinarian.