Roasted Sweet Potato Soup

Ingredients

• 1 pound garnet sweet potatoes, peeled, cut into 1 1/2-inch cubes
• 3 cups chicken stock
• 1/8 teaspoon black pepper
• 2 Tbsp olive oil
• 2 Tbsp sour cream or plain yogurt (Greek or regular)
• 1/4 teaspoon of cumin seeds (or ground cumin)
• 1/2 teaspoon kosher salt
• 1 teaspoon ground thyme
• 2 large shallots, peeled and cut in half lengthwise