Preheat the oven to 350 degrees F. Slice the tops off each mini bread bowl and scoop out the centers to create a hollow space. Place the bowls on a baking sheet and warm them in the oven for 10 minutes.
Melt the butter in a large pot over medium heat. Add the diced onion and cook until soft, about 5 minutes. Stir in the minced garlic and cook for 1 minute more.
Add the pumpkin puree, vegetable broth, cinnamon, nutmeg, ginger, and cloves to the pot. Stir well and bring the mixture to a simmer. Cook for 15 minutes, stirring occasionally.
Remove the pot from the heat. Stir in the heavy cream and season with salt and pepper. Let the soup sit for 5 minutes to thicken slightly.
Ladle the soup into the warmed bread bowls. Sprinkle each serving with chopped fresh parsley before serving.