Experience a burst of color and taste with this easy Roasted Beet Soup. Roasted veggies meet broth in a harmonious blend, perfected with a luxurious touch of sour cream on top.
Preheat the oven to 375 degrees Fahrenheit (about 190 degrees Celsius) and line a rimmed baking sheet with foil. In a large, stain-proof mixing bowl, toss the beets, potato, and cauliflower with the salt, pepper, and two tablespoons of olive oil. Arrange the vegetables in a single layer on the baking sheet. Roast in the preheated oven until the beets and potatoes are knife-tender; about 35 to 45 minutes.
Near the end of the roasting time, heat the remaining tablespoon of olive oil in a 3-quart or larger lidded pot set over medium heat. Add the onion and cook for 5 to 7 minutes, until it begins to turn translucent. Add the garlic and cook for another minute, until fragrant.
Add the broth and roasted vegetables to the cooking pot. Allow the mixture to come to a boil; cover, reduce the heat to low, and simmer until all of the vegetables are tender enough to mash against the side of the pot with a wooden spoon (about fifteen minutes).
Purée the mixture using an immersion or countertop blender. Stir in the balsamic vinegar, then taste the soup and add additional salt and pepper as desired. Serve with a dollop of sour cream.
Notes
You can store Roasted Beet Soup in the refrigerator in an airtight container for up to 5 days. It's freezer-friendly, so you can freeze it for up to 3 months, ensuring it's cooled down before storing.To reheat, thaw it overnight in the fridge if frozen, and warm it on the stove over medium heat until heated through. Avoid boiling to preserve the texture and flavor. Reheating in a microwave is also an option, using a microwave-safe container and stirring occasionally to ensure even heating.