Homemade Dog Birthday Cake - How To Make A Birthday Cake For Your Dog

Ingredients

• Vegetable oil or cooking spray, for pan
• 2 c. all-purpose flour, plus more for pan
• 1 tsp. baking soda
• 1/2 tsp. baking powder
• 1/2 tsp. kosher salt
• 2 c. mashed ripe banana (from about 4 large bananas)
• 6 tbsp. smooth peanut butter
• 2 large eggs
• 1/4 c. pure maple syrup
• 2 c. unsweetened Greek yogurt
• 1 c. smooth peanut butter
• 2 tbsp. pure maple syrup