Vegan Creamy Tomato Soup with Grilled Cheese Croutons

I’ve served this velvety bowl at everything from last-minute book clubs to snowy-day ski trips, and it never fails to draw a collective “mmmm” the moment spoons hit bowls. The grilled-cheese croutons—yes, fully vegan, gloriously stretchy—are the playful finishing touch that turns a simple starter into the main event. Whether you’re feeding picky toddlers, skeptical omnivores, or your future in-laws, this recipe is the culinary hug that makes everyone feel welcome.

Why This Recipe Works

Silky Without Dairy: A quick cashew cream whips up in your blender for luxurious body—no coconut aftertaste, no processed starches.
Restaurant Depth: Roasting the tomatoes with a splash of balsamic concentrates their flavor for a sweet-smoky backbone.
Crouton Magic: Mini grilled-cheese squares stay crisp on top but soften into gooey pockets of nostalgia when you dive in.
Freezer-Friendly: Make a double batch, freeze flat in zip bags, and reheat straight from frozen on harried weeknights.
One-Pot Wonder: From start to finish you’ll dirty only a sheet pan, a Dutch oven, and your blender—minimal cleanup, maximum payoff.
Allergy-Smart: Nut-free? Sub white beans. Soy-free? Choose pea-protein cheese. Gluten-free? Grab your favorite GF bread.

Ingredients You'll Need

Each component below pulls its weight to create a soup that tastes like summer sunshine captured in winter.

Tomatoes: Seek out whole-peeled San Marzano or fire-roasted Muir Glen. Crushed or puree already contain added citric acid that can read as metallic once reduced.

Cashews: Raw, not roasted. Soak them while the tomatoes roast; 10 minutes in just-boiled water is enough to soften for a satiny blend.

Miso Paste: A teaspoon of mellow white miso (soy- or chickpea-based) gives the soup that elusive “I can’t name it” umami without screaming soy.

Roasted Red Peppers: One jarred pepper blitzed into the mix amplifies sweetness and color; totally optional but chef-level clever.

Nutritional Yeast: For the grilled-cheese croutons, this flaky gold supplies nutty, cheesy notes without any dairy. Buy in bulk—trust me, you’ll sprinkle it on everything.

Vegan Mozzarella: I adore Miyoko’s cultured cashew blocks for meltability, but any shredded plant-based mozzarella works. Make sure the primary fat is coconut or cashew, not just starch and oil.

Crusty Bread: A country-style sourdough or pain de mie grills evenly and stays chewy inside. Stale bread actually works better—it soaks up the “butter” without getting soggy.

How to Make Vegan Creamy Tomato Soup with Grilled Cheese Croutons

Roast the Tomatoes

Preheat oven to 425 °F (220 °C). Drain two 28-oz cans of whole tomatoes, reserving the juice. Spread tomatoes on a parchment-lined sheet, drizzle with 2 Tbsp olive oil, 1 Tbsp balsamic, 1 tsp salt, ½ tsp pepper. Roast 25 minutes until edges caramelize. The kitchen should smell like pizza!

Start the Cashew Cream

While tomatoes roast, cover 1 cup raw cashews with boiling water. Set aside 15 minutes. Drain, then blend with ¾ cup fresh water, ½ Tbsp lemon juice, and a pinch of salt until completely smooth—about 60 seconds in a high-speed blender. Reserve ½ cup for garnish; the rest goes into the soup.

Warm 1 Tbsp olive oil in a Dutch oven over medium heat. Add 1 diced onion and cook 4 minutes until translucent. Stir in 3 cloves minced garlic, 1 Tbsp tomato paste, 1 tsp smoked paprika, and ½ tsp dried thyme; cook 2 minutes. The paste will darken—this caramelization equals free flavor.

Deglaze & Simmer

Tip in ½ cup dry white wine (or veg broth) and scrape browned bits. Add roasted tomatoes, reserved juice, 2 cups vegetable broth, 1 roasted red pepper (optional), and 1 tsp white miso. Bring to a boil, then simmer 15 minutes so flavors meld.

Blend to Silk

Use an immersion blender directly in the pot, or carefully transfer to a countertop blender in batches. Puree until velvety. Return to low heat, whisk in the cashew cream (minus reserved ½ cup). Season with salt, pepper, and a pinch of maple syrup to balance acidity.

Make the Grilled Cheese Croutons

Heat a non-stick skillet over medium. Butter 6 slices of bread (use vegan butter). Between two slices sprinkle ½ cup shredded vegan mozzarella and 1 Tbsp nutritional yeast. Grill 3 minutes per side until golden and the cheese melts. Cut into ¾-inch cubes.

Serve Like a Pro

Ladle soup into warm bowls. Drizzle with reserved cashew cream in a dramatic swirl. Pile grilled-cheese croutons high, then finish with fresh basil ribbons, cracked pepper, and a glug of peppery olive oil. Serve immediately—croutons wait for no one.

Expert Tips

Night-Before Trick

Roast tomatoes and blend soup base; refrigerate. Next day simply reheat and whisk in cashew cream for 5-minute weeknight luxury.

Texture Tune-Up

Pass blended soup through a fine-mesh sieve for Michelin-level silkiness—worth the extra 30 seconds when company’s coming.

Smoky Twist

Add ½ tsp chipotle powder for a gentle back-of-throat heat that amplifies tomato sweetness without overpowering.

Chill & Serve

This soup is equally stunning served cold as a summer gazpacho—just add an extra squeeze of lemon and diced avocado on top.

Double-Duty Blender

If you only have a bullet blender, blend cashew cream first, rinse, then blend soup in batches—no need for extra dishes.

Color Pop

Stir in a handful of baby spinach at the very end for a vibrant emerald contrast that photographs beautifully.

Variations to Try

Roasted Red Pepper & Tomato: Swap ½ the tomatoes for jarred or home-roasted red peppers for a sweeter, more complex profile.
Curried Tomato: Add 1 tsp yellow curry powder and finish with coconut cream instead of cashew for a Thai-inspired twist.
Herby Garden: Stir in a handful of fresh dill, parsley, and chives just before serving for a springtime vibe.
Bean Power: Replace cashews with 1 cup canned white beans plus 1 Tbsp olive oil for a nut-free, protein-boosted version.
Spicy Kick: Float chili crisp oil on top and scatter crushed plantain chips instead of croutons for Latin-Caribbean fusion.

Storage Tips

Refrigerate: Cool soup completely, transfer to airtight containers, and refrigerate up to 5 days. Keep croutons separately in a paper-towel-lined bag so they stay crisp.

Freeze: Portion soup into silicone muffin molds, freeze, then pop out and store in zip bags up to 3 months. Thaw overnight in the fridge or reheat directly in a saucepan with a splash of broth.

Reheat: Warm gently over medium-low heat, whisking occasionally. If the soup tightens (cashew cream can thicken), loosen with broth or water until silky again. Microwave works in a pinch—use 50% power and stir every 45 seconds.

Crouton Revival: Revive leftover grilled-cheese cubes in a 350 °F oven for 5 minutes or an air fryer for 2 minutes. They emerge even crunchier than day one.

Frequently Asked Questions

Absolutely—choose 3 lb ripe Roma or plum tomatoes, halve and roast them cut-side up for 35 minutes until skins blister. Peel off skins (they slip off easily) then proceed with the recipe. Add 1 tsp tomato paste for deeper color since fresh tomatoes are less concentrated.

Use the same volume of canned white beans (drained) plus 1 Tbsp olive oil for richness. Blend with water as directed. Sunflower seeds work too, but they’ll add a faint earthy note—balance with an extra pinch of sweetener.

Stir in ½–1 tsp maple syrup or agave. A splash of unsweetened oat milk also mellows acidity. If it’s still sharp, simmer 5 minutes longer—time softens harsh edges.

Yes. Water-sauté onions with a pinch of salt, adding splashes of broth to prevent sticking. Roast tomatoes on silicone mats instead of oiled parchment. Choose a vegan cheese that melts without oil (many are coconut-based) or simply skip the croutons and serve soup with toasted pumpkin seeds.

Press gently with a spatula for even contact, but don’t smash. Keep heat at medium; too hot and bread browns before cheese melts. If necessary, add 1 Tbsp water to the skillet and immediately cover with a lid—the steam jump-starts melting without extra browning.

Kids love dipping! Omit smoked paprika and miso if yours are spice-shy. Pour soup into espresso cups or mini bowls and let them spear croutons with cocktail picks—suddenly it’s a party. My niece calls the croutons “cheese marshmallows,” and that’s high praise.

Vegan Creamy Tomato Soup with Grilled Cheese Croutons

Why This Recipe Works

Ingredients You'll Need