Treat your pup to this tasty birthday cake made with peanut butter and banana. It's topped with mashed potato frosting and sprinkled with bacon crumbles. All that's missing is a party hat!
Preheat oven to 350°F. Lightly coat two 6-inch round baking pans with nonstick spray and line the bottoms with parchment paper; set aside.
In a medium bowl, mash banana until smooth. Using an electric mixer, beat in eggs, peanut butter, and 2 Tbsp. honey on high speed until combined. Add flour, water, olive oil, and baking powder; beat until smooth. Divide batter between prepared pans.
Bake 20 to 22 minutes until a toothpick inserted in the center comes out clean. Cool the dog birthday cakes in pans for 5 minutes. Remove layers from pans; cool completely on a wire rack.
Meanwhile, prepare frosting. Place potato pieces in a medium saucepan and cover with water. Bring to boiling over high heat. Reduce heat and simmer, covered, about 20 minutes until very tender. Drain and cool slightly; transfer to a medium mixing bowl. Add yogurt and remaining 1 tsp. honey. Beat with an electric mixer on medium speed for about 1 minute. Add water as needed to reach a smooth frosting consistency and then beat on high speed for an additional minute or until completely smooth and light.
Place one cake layer on a platter. Top with a thin layer of frosting. Add remaining cake layer. Top with remaining frosting. If desired, sprinkle with crumbled bacon and add a dog-themed cake topper.
*Do not select items that contain the ingredient xylitol. Xylitol is a sweetener that is sometimes found in peanut butter and yogurt products. It can be very toxic to pets, even in small amounts.
**Bacon may induce pancreatitis in predisposed/small dog breeds, so pay attention to portion sizes.
Storage: Lightly cover cake and store in the refrigerator for up to 3 days.