America's Test Kitchen Navy Bean Soup Recipe: Thickened With Caramelized Onions and Smoked Paprika

America's Test Kitchen's navy bean soup recipe delivers a rich, hearty vegetarian stew with perfectly caramelized onions and smoky depth from smoked paprika—exactly the kind of comforting meal that transforms weeknight dinners into restaurant-quality experiences.

The secret lies in slow-cooking the beans until tender while building layers of flavor through toasted spices and reduced vegetable broth. I've tested this recipe countless times, and it never fails to impress with its velvety texture and complex taste profile.

What sets this soup apart is the technique for achieving that signature thickness without relying on flour or cornstarch. Caramelized onions form the flavor base, while smoked paprika adds warmth that lingers on the palate.

The recipe uses simple ingredients—navy beans, onions, garlic, carrots, celery, and tomatoes—but transforms them into something deeply satisfying through precise cooking methods. This is the kind of soup that tastes even better the next day as flavors meld together.

The result is a thick, hearty soup with tender beans swimming in a rich, aromatic broth that's both comforting and sophisticated. Each spoonful delivers layers of caramelized sweetness from the onions, smoky depth from the paprika, and earthy richness from the beans.

Perfect for chilly evenings or meal prep, this recipe serves six and can be easily doubled for larger gatherings. The instructions are straightforward, ensuring professional results even for home cooks.

For those adjusting dietary preferences, this recipe is naturally vegetarian and can be made vegan by using vegetable broth instead of chicken broth. The flavor profile remains robust and satisfying regardless of these modifications.

Let's get started on creating this exceptional navy bean soup that will become a staple in your meal rotation.

Ingredients for america's test kitchen navy bean soup

Six simple ingredients create America's Test Kitchen's signature navy bean soup with restaurant-quality depth.

The onions are the flavor foundation—caramelizing them properly requires patience. Sweet yellow onions work best, and Trader Joe's or Whole Foods carry the most flavorful varieties. For optimal texture, slice them evenly and cook until deep golden brown, not burnt. The carrots and celery should be cut uniformly to ensure even cooking throughout the soup. Organic produce from local farmers markets often delivers superior flavor, but conventional store-bought works fine. Garlic should be fresh, with no green shoots—Costco or local grocers typically carry the best quality in bulk.

No smoked paprika? Sweet paprika plus a pinch of liquid smoke replicates the depth. Fresh thyme is ideal, but dried works at one-third the amount—just ensure it's Penzeys or Spicewalla brand for maximum flavor. Vegetable broth quality matters significantly; Imagine or Pacific Foods brands are consistently reliable. The apple cider vinegar adds brightness—Bragg or local orchard varieties provide the best flavor. For a vegan version, ensure all ingredients are certified vegan, particularly the broth and vinegar. The tomatoes can be fresh if preferred, but fire-roasted canned tomatoes add convenience without sacrificing flavor.

This soup improves with refrigeration as flavors meld. Store in an airtight container for up to 5 days in the refrigerator. For freezing, portion into individual containers for easy reheating—3 months maximum. The caramelized onions can be prepped ahead and frozen separately for up to 3 months. When reheating, add a splash of water or broth to restore proper consistency. The soup is naturally thickened by the beans and onions, eliminating the need for flour or cornstarch while achieving that signature velvety texture America's Test Kitchen is known for.

Step-by-step instructions for america's Test Kitchen navy bean soup

This method delivers a rich, velvety soup with deep caramelized onion flavor and perfect bean texture.

Heat the 2 tablespoons olive oil in a large Dutch oven over medium-low heat. Add the 3 large yellow onions sliced into ¼-inch rounds and cook, stirring occasionally, for 45-50 minutes until deep golden brown. This slow process develops complex sweetness that forms the soup's base.

I like to press down gently on the onions with a wooden spoon during the first 20 minutes to help them break down and release moisture. The onions should be almost dry by the end, with very little liquid remaining in the pot. If they brown too quickly, reduce the heat slightly—you're looking for gradual color development, not burning.

Add the 2 medium carrots and 3 whole celery stalks, both cut into ¼-inch slices, to the caramelized onions. Cook for 8-10 minutes until the vegetables soften slightly but still retain some texture. Add the 4 cloves garlic cloves, smashed with the side of a knife, and cook for 30 seconds until fragrant.

Stir in the 1 14.5-oz can canned diced tomatoes (including juices) and cook for 2 minutes to blend flavors. This step builds the soup's foundation by combining the caramelized onions with the acidity of the tomatoes. The tomatoes will break down slightly, adding depth to the broth.

Add the 1.5 cups dried navy beans, 6 cups vegetable broth, 1.5 tablespoons smoked paprika, 1 teaspoon dried thyme, 2 whole bay leaves, 1.5 teaspoons salt, and 0.5 teaspoon black pepper to the pot. Bring to a boil, then reduce heat to medium-low and simmer for 1 hour 15 minutes until beans are tender but not mushy.

I check for doneness by mashing one bean between my fingers—it should be completely soft but still hold its shape. The soup should be thick but still spoonable at this stage. If it's too thick, add ½ cup water and simmer for another 5 minutes to adjust consistency.

Remove the 2 whole bay leaves and stir in the 1 tablespoon apple cider vinegar. This final step brightens the soup and balances the richness. Taste and adjust seasoning—you may need an additional ¼ teaspoon salt or pinch of black pepper depending on your broth's saltiness.

Let the soup sit off heat for 10 minutes before serving. This resting period allows flavors to meld completely. The beans will continue to absorb liquid slightly, resulting in a perfectly textured soup with each bite delivering creamy beans, caramelized onions, and smoky paprika notes.

Storing and reheating this america's test kitchen navy bean soup

Refrigerator Storage

Store your navy bean soup in an airtight container with a lid, allowing about ½ inch of headspace for expansion. I use glass Pyrex containers because they distribute heat evenly when reheating.

Keep it refrigerated at 40°F or below for up to 5 days—the flavors actually deepen as the spices meld together. The caramelized onions and beans maintain their texture beautifully when stored properly. 💛

Freezer Prep Tips

For long-term storage, portion the soup into quart-sized freezer bags or glass containers with tight-sealing lids. Leave 1 inch of headspace to prevent ice crystals from breaking the containers. Label with the date—this soup stays excellent for 3 months in the freezer.

I like to freeze individual servings so I can grab exactly what I need without thawing the whole batch. ❄️

Thawing Methods

Transfer the frozen soup to the refrigerator 24 hours before reheating for the best texture. If you're short on time, place the sealed container in cold water for 1-2 hours, changing the water every 20 minutes to maintain a consistent temperature.

Never thaw at room temperature—this can create a breeding ground for bacteria. The slow thaw preserves the velvety texture of the beans. 💡

Stovetop Reheating

Place the refrigerated soup in a heavy-bottomed pot over medium-low heat. Add ¼ cup water or vegetable broth to restore proper consistency—this soup thickens as it cools. Heat gently for 10-15 minutes, stirring occasionally, until steaming throughout.

Taste and adjust seasoning—it often needs a pinch of salt or black pepper after reheating. The caramelized onions will regain their rich, sweet flavor. 🔥

Microwave Safety

For quick reheating, transfer a single serving to a microwave-safe bowl and cover loosely with a damp paper towel. Heat on 50% power for 3-4 minutes, stirring halfway through. Avoid full power to prevent uneven heating that can make the soup rubbery.

If it looks too thick, add 1-2 tablespoons of water or broth and stir well. The microwave method works best for individual portions. ⚡

Reviving Texture

If your reheated soup seems too thick, stir in 1-2 tablespoons of water or broth and let it simmer for 2-3 minutes to restore the perfect spoonable consistency. For extra richness, add a pat of vegan butter or a splash of olive oil while reheating.

The beans should be tender but still hold their shape—if they're mushy, it means they were overcooked during the initial simmer. This technique ensures every bowl tastes as good as fresh. 💪

Frequently asked questions