Progresso-Style Lentil Soup Recipe: Pantry Staples Simmered to Earthy Richness

This Progresso-style lentil soup delivers the same hearty, comforting flavors you love from the can—except it’s made fresh in your own kitchen. The secret lies in simmering dried lentils and pantry staples until they develop that signature earthy richness, with a creamy texture that feels restaurant-quality.

I’ve tested countless variations, and this version consistently earns rave reviews for its depth of flavor and simplicity.

The beauty of this recipe is its reliance on basic ingredients—dried lentils, vegetable broth, and a few fresh vegetables—that transform into a satisfying meal with minimal effort.

A slow simmer builds layers of flavor, while optional garnishes like fresh parsley or a drizzle of olive oil elevate it to something special. It’s the kind of soup that warms you from the inside out, perfect for chilly evenings or meal prep.

What you’ll end up with is a velvety, well-seasoned lentil soup that’s hearty enough to stand alone or pair with crusty bread. The lentils soften just enough to create a thick, comforting base, while the vegetables add freshness and texture.

This is the recipe I turn to when I need a quick, nourishing meal that doesn’t sacrifice flavor.

Best of all, it’s 100% vegan and packed with plant-based protein, making it a go-to for anyone looking for a wholesome, pantry-friendly dish. Ready to make it? Here’s everything you need to get started.

Ingredients for progresso lentil soup

Basic pantry staples that transform into restaurant-quality lentil soup with minimal effort.

The lentils are the star here—dried brown lentils hold their shape perfectly, giving that classic Progresso texture. Most grocery stores carry them in the canning aisle or bulk section. Trader Joe's has a great organic option, but regular supermarket brands work fine. Rinse them well before cooking to remove any dirt or debris. For the broth, low-sodium is key—you'll be adding plenty of salt later. I usually grab a big carton of Imagine or Pacific Foods vegetable broth for this recipe. Fresh carrots and celery make all the difference, but frozen veggies in a pinch work too—just thaw them first.

No fresh thyme? Dried works perfectly—just use one-third the amount. Short on carrots? Sweet potatoes or butternut squash add great sweetness. The tomato paste can be a squeeze tube from Trader Joe's if you prefer no-mess convenience. For the garlic, fresh is best, but powdered works in a bind at half the amount. The lemon juice at the end is what really makes this soup sing—freshly squeezed is ideal, but bottled works too if you're in a hurry. The parsley is purely for garnish, so skip it if you're out.

This soup tastes even better the next day as flavors meld together. Keeps in the fridge for 5-6 days in an airtight container. Freezes beautifully for up to 3 months—just thaw overnight in the fridge before reheating. I always make a double batch because it's perfect for meal prep. The flavor actually improves after the first day, so it's worth making extra. Store leftovers with a splash of water or broth to keep it from getting too thick when reheated.

Step-by-step instructions for Progresso-style lentil soup

Here's how to transform pantry staples into hearty, restaurant-quality lentil soup with deep flavor.

Heat the 2 tablespoons extra-virgin olive oil in a large pot over medium heat. Add the 1 whole diced yellow onion, 2 medium chopped carrots, and 3 whole diced celery stalks. Cook for 5-6 minutes until the vegetables begin to soften and the onion turns translucent.

This foundational step builds flavor through caramelization. I like to stir occasionally to ensure even cooking—don't rush it. You'll know it's ready when the vegetables release easily from the bottom of the pot and develop a golden hue around the edges.

Stir in the 4 minced garlic cloves and cook for 30 seconds until fragrant. Add the ½ cup tomato paste and cook for another 2 minutes, stirring constantly. This step deepens the sauce's richness by developing the tomato flavor.

Next, pour in the 6 cups vegetable broth and bring to a gentle boil. Add the 1 14.5-ounce can diced tomatoes (with juices), 1 teaspoon dried thyme, 2 whole bay leaves, 1½ teaspoons salt, and ½ teaspoon black pepper. Stir well to combine all ingredients.

Add the 1½ cups rinsed dried brown lentils to the pot. Reduce heat to low and let the soup simmer uncovered for 25-30 minutes. You'll notice the lentils begin to soften and the soup thickens gradually—this is when the magic happens.

I check for doneness by tasting a lentil—it should be tender but still hold its shape. If the soup starts to reduce too much, add ½ cup water to maintain the proper consistency. The lentils should absorb the broth while keeping their hearty texture.

Remove the 2 bay leaves and stir in the 1 tablespoon lemon juice. Add the ¼ cup chopped fresh parsley and simmer for 1-2 minutes to let the flavors meld. The lemon juice brightens the earthy lentils while the parsley adds freshness.

Taste and adjust seasoning if needed—this is where you can personalize the soup. I often add a pinch more salt or a crack of black pepper to taste. The soup should be rich, savory, and balanced with bright acidity from the lemon.

Ladle the soup into bowls and serve immediately. The aroma alone will make your kitchen smell like a cozy restaurant. I like to serve it with warm crusty bread to soak up every last drop of that hearty broth.

This soup tastes even better the next day as the flavors continue to develop. Store leftovers in an airtight container in the refrigerator for up to 4 days or freeze for 3 months. The lentils hold their texture beautifully when reheated gently.

Essential equipment for this recipe

Large Pot Essentials

You’ll need a large, heavy-bottomed pot (at least 6-8 quarts) to handle the soup’s volume without boiling over. I swear by my All-Clad Stainless Steel Dutch Oven—it distributes heat evenly and prevents scorching.

For budget-friendly options, a Calphalon nonstick pot works well, though stainless steel is more durable. Avoid thin aluminum pots, as they can’t maintain consistent heat during long simmering. 🌡️

Wooden Spoon

A wooden spoon is non-negotiable for stirring this soup—it won’t scratch your pot like metal utensils, and it’s gentle on the lentils. I keep a Oxo Good Grips wooden spoon in my kitchen for this exact reason.

It’s heat-resistant and has a comfortable handle for long simmering sessions. If you don’t have one, a silicone spatula works in a pinch, but it lacks the same sturdy feel.

Immersion Blender

For a creamy texture (like canned lentil soup), an immersion blender is your best friend. I use a Cuisinart Smart Stick to blend half the soup for a velvety finish while keeping the other half chunky.

If you don’t own one, a regular blender works—just transfer a portion of the soup to blend and stir it back in. Avoid over-blending, or the soup will turn gluey.

Fine-Mesh Strainer

A fine-mesh strainer comes in handy for rinsing the dried lentils before cooking—this removes debris and prevents cloudy broth. My go-to is a OXO Good Grips strainer, but any collapsible mesh strainer (like those from IKEA) does the job.

Skip this step, and you risk gritty texture in your soup. For the fresh parsley, a strainer also works to drain excess water after chopping.

Measuring Tools

Precision matters when balancing flavors, so invest in stainless steel measuring spoons and a liquid measuring cup. I recommend OXO’s Good Grips set—they’re durable and easy to read. For the tomato paste, a small silicone spatula helps scrape every last bit from the tube.

Weighing ingredients (like lentils) on a digital kitchen scale ensures consistency, but measuring cups work fine for most home cooks. 💡

Optional Gadgets

For extra convenience, a microplane is perfect for zesting lemon or grating garlic finely. A garlic press saves time if you’re short on patience, though I prefer mincing for better flavor distribution.

If you love garnishes, a pair of sharp kitchen shears makes chopping fresh parsley effortless. None of these are essential, but they elevate the process—especially when making this soup frequently.

Frequently asked questions