With this rich and creamy roasted Tomato Bisque, sweet, caramelized tomatoes and roasted garlic and onions come together, creating an explosion of flavor. It’s a simple, bistro-quality dish that will have everyone coming back for seconds!

Jump to:

• ❤️ Why You'll Love This Tomato Bisque Recipe
• 🛒 Ingredients for Keto Tomato Bisque
• 🔪 How to Make Tomato Bisque
• ☑️ Storage Instructions
• 🍴 What to Serve with Tomato Soup
• 💡 Tips for Making Low Carb Tomato Bisque
• 🔄 Substitutions and Additions
• Can I Make the Bisque in Advance?
• What If I Can’t Find Campari Tomatoes?
• Can I Use Canned Tomatoes Instead of Fresh?
• Can I Freeze the Bisque with the Cream in it?
• What Can I Do If My Soup Tastes Too Acidic?
• Can I Make this Bisque Without a Blender?
• Do I Need to Peel the Tomatoes?
• 🍽️ More Keto Soup Recipes

❤️ Why You'll Love This Tomato Bisque Recipe

• Made with roasted fresh juicy tomatoes
• Roasted onion and garlic
• Creamy silky smooth texture
• Restaurant quality made easy
• Vegetarian friendly
• Perfect pairing with Keto friendly grilled cheese

This Tomato Bisque is smooth and creamy and full of rich, comforting flavors. Roasted Campari tomatoes act as the base, giving it a subtle sweetness that blends beautifully with savory roasted garlic and onions. The addition of heavy cream makes the soup velvety smooth, while fresh basil and a touch of parmesan add the perfect finishing touch.

With the perfect blend of roasted goodness and creamy comfort, this tomato bisque is ideal for when you want something hearty but not too heavy. Pair it with a grilled cheese sandwich on your favorite low-carb bread, and you've got a meal that’s as cozy as it gets. Whether you’re serving it for a quick lunch or an easy weeknight dinner, this simple, yet super flavorful, soup is always a hit.  

If this creamy Tomato Bisque hits the spot, you should also try my luscious Cream of Wild Mushroom Soup, It’s a rich and hearty soup that’s also quick and easy to make.

🛒 Ingredients for Keto Tomato Bisque

• Campari tomatoes
• Onion
• Vegetable broth
• Heavy cream
• Parmesan cheese
• Garlic
• Olive oil
• Basil
• Dried oregano
• Salt
• Ground black pepper

*Exact measurements are listed in the recipe card below.

🥣 Recommended Tools

• Baking sheet
• Dutch oven or pot
• High powered blender

🔪 How to Make Tomato Bisque

Preheat oven to 425°F.

Wash, dry and cut each tomato in half.  Remove the cores and discard. If you use larger tomatoes, cut them into quarters.

Place the tomatoes, yellow onion and (unpeeled) garlic cloves on a baking sheet.

Drizzle with olive oil, then sprinkle with the dried oregano, half the salt and half the ground black pepper.

Toss to combine, then roast in the oven for 30-35 minutes stirring halfway through cooking.

Take each garlic clove and remove the peels, then add them along with the tomatoes, onions and any juices into a blender or food processor.

Puree until smooth, then pour into a Dutch oven or pot and heat to medium.

Add in the vegetable broth, fresh basil, remaining salt and pepper, then simmer for 5 minutes.

Pour in the heavy cream and grated parmesan cheese and simmer for another 5 minutes.

Ladle into your soup bowls and garnish with some fresh basil and a drizzle of heavy cream.

I served mine with a grilled cheese made with Sola bread and it paired beautifully!

☑️ Storage Instructions

Fridge: Store leftover Tomato Bisque in an airtight container in the fridge for up to 4 days.

Freezer: Freeze the soup in a freezer-safe container for up to 3 months. Let it cool completely before freezing, and thaw in the fridge overnight before reheating.

Reheating: Warm the bisque on the stovetop over medium heat, stirring occasionally until heated through. If the soup thickens too much, you can simply add a splash of broth or cream.

🍴 What to Serve with Tomato Soup

You can serve this delicious soup as main course or as a starter. Here are some great pairings to consider:

• Grilled cheese sandwich (using Homemade Bread or any keto-friendly bread)
• Caesar Salad or your favorite mixed green salad
• Roasted vegetables like these easy Oven Roasted Veggies
• Garlic bread or these homemade Keto Garlic Rolls
• Bacon-wrapped Jalapeño Poppers for a spicy twist
• Chicken Drumsticks or Chicken Tenders
• Baked Salmon
• Air Fryer Pork Chops
• Grilled Steak or Steak Bites
• Fried Shrimp or Shrimp Skewers

💡 Tips for Making Low Carb Tomato Bisque

Roasting is key - Roasting the tomatoes, garlic, and onions deepens their flavor and adds a subtle caramelization that makes the bisque extra rich. Don’t skip this step, and be sure to stir halfway through for even roasting.

Use the right tomatoes - Campari tomatoes are ideal because they’re naturally sweet and low in acidity, giving the bisque a balanced, smooth flavor. If using other tomatoes, make sure they’re ripe to avoid a tart or bitter soup.

Don’t add cream too early - Wait until the end to add the heavy cream. Adding it too soon can cause it to break or curdle, especially if the soup is still too hot.

Let it simmer - After adding the broth and fresh basil, let the soup simmer to meld the flavors together. This step gives the bisque a richer depth that’s worth the extra few minutes.

🔄 Substitutions and Additions

• Dairy-free: Use unsweetened coconut milk or almond milk instead of heavy cream if you’re looking for a dairy-free option.

• Spicy kick: Add a pinch of red pepper flakes or a dash of hot sauce for some heat.

• Smoky twist: Mix in a bit of smoked paprika for a subtle, smoky flavor.

• Other herbs: Try thyme or rosemary instead of basil for a different flavor.

• Cheese: Use shredded mozzarella, cheddar, or gouda in place of parmesan for a cheesier bisque.

• Roasted red peppers: Blend in roasted red peppers for extra depth of flavor.

• Spinach or kale: Stir in fresh spinach or kale during the final simmer for added greens.

• Crumbled bacon: Top with crispy bacon for a salty, crunchy topping.

• Sun-dried tomatoes: Add chopped sun-dried tomatoes before blending for an extra concentrated tomato flavor.

• Fresh pesto: Swirl in a spoonful of fresh, homemade Pesto for a flavorful topping.

Can I Make the Bisque in Advance?

Absolutely! This Tomato Bisque can be made ahead of time and stored in the fridge for up to 4 days. The flavors will deepen as it sits, making it even tastier.

What If I Can’t Find Campari Tomatoes?

If Campari tomatoes are unavailable, you can substitute them with any fresh, ripe tomatoes, like Roma or beefsteak tomatoes. Just make sure to core and cut them into similar sizes for even roasting, and adjust the roasting time if using larger tomatoes.

Can I Use Canned Tomatoes Instead of Fresh?

You can, but trust me, fresh tomatoes provide the best flavor. If you can’t find rip and juicy tomatoes you can substitute with two 28-ounce cans of whole peeled tomatoes. Just drain the tomatoes and roast them.

Can I Freeze the Bisque with the Cream in it?

Yes, you can freeze the bisque with the cream added, but be sure to let it cool completely before freezing. When reheating, warm it slowly and stir frequently to avoid the cream separating.

What Can I Do If My Soup Tastes Too Acidic?

If your bisque tastes too acidic, try adding a pinch of granulated sugar substitute or a bit more cream to balance it out. Roasting ripe tomatoes also helps mellow out their acidity.

Can I Make this Bisque Without a Blender?

Yes! If you don’t have a blender, you can use a food processor, and immersion blender or even mash the roasted ingredients by hand for a chunkier texture. Just be sure to cook everything down well so it's soft.

Do I Need to Peel the Tomatoes?

No need to peel the tomatoes before roasting. The skins blend up smoothly when puréed, especially if you use a high-powered blender.

🍽️ More Keto Soup Recipes

• Jalapeño Popper Chicken Soup
• Keto Italian Wedding Soup
• Easy Keto Broccoli Cheese Soup
• Thai Coconut Curry Chicken Soup
• Smoked Sausage and Cauliflower Cheddar Soup