Directions

• Preheat the oven to 375 degrees F (190 degrees C).
• Roughly quarter the onion half, and separate the pieces. Place onion pieces on a baking tray. Open the can of diced tomatoes. Carefully drizzle some of the liquid onto the onion.
• Roast onions in the preheated oven until soft, about 25 minutes. Place onions and tomatoes in a high-powered blender, such as a Vitamix. Cover tightly and blend on high for 40 seconds.
• Melt butter in a saucepan over medium heat. Carefully pour in the tomato mixture, and cook, stirring occasionally until hot, about 3 minutes. Stir in 3 tablespoons cream.
• Ladle soup into bowls, and drizzle remaining cream over each serving.