Sweet Corn Soup with Roasted Poblanos
Affiliate disclosure: This post may contain affiliate links. I may earn a small commission at no extra cost to you. See our Privacy Policy for details HERE.
There is something wonderfully comforting about a bowl of sweet corn soup, especially when it is smooth, buttery, and topped with smoky roasted peppers. I love how this recipe feels cozy enough for a family dinner yet fresh and bright enough to serve on a warm day.
Fresh corn brings natural sweetness, while butter, onion, garlic, cumin, and oregano build a savory base. Roasted poblanos add gentle smokiness, jalapeño brings a little heat, and lime juice keeps each spoonful lively. Cotija cheese and hot sauce finish the soup with a salty, tangy kick.
The method is simple: simmer the potato and corn cobs to flavor the broth, then add the kernels and blend until smooth. Meanwhile, char and steam the poblanos, peel away their skins, and chop them for serving. You can enjoy the soup warm or chill it for a cool, refreshing meal.
Serve this sweet corn soup with roasted poblanos on a chilly evening, or bring it to a summer lunch or casual gathering. Since it makes six servings and takes about 40 minutes from start to finish, it is an easy choice for sharing.
Why You’ll Love This Sweet Corn Soup with Roasted Poblanos
- It is ready in about 40 minutes. The corn simmers briefly, so you can get dinner on the table without a long wait.
- It makes the most of fresh corn. Simmering the cobs in the pot adds extra corn flavor to the broth.
- You can serve it warm or cold. Use a little less water for a thicker warm soup, or add more water before chilling.
- It has a lovely mix of flavors. Sweet corn, smoky poblanos, bright lime, and salty Cotija work beautifully together.
- It is easy to adjust. Add hot sauce for more heat, or keep the toppings mild for guests who prefer gentler flavors.
Sweet Corn Tips
Choose ears with fresh green husks and plump kernels that feel full from tip to base. Once you bring the corn home, refrigerate it and use it soon for the sweetest flavor. To cut the kernels safely, stand each ear upright on a cutting board and slice downward with a sharp knife. Keep the cobs for simmering, and measure out 5 cups of kernels for the soup. If fresh corn is not in season, thawed frozen corn can work, though it will not provide cobs to flavor the broth.
Options for Substitutions
- Fresh corn: Use about 5 cups of thawed frozen corn if fresh ears are unavailable. Skip the cobs and follow the remaining directions.
- Butter: Replace the butter with olive oil for a dairy-free base. The flavor will be a little less rich.
- Water: Use low-sodium vegetable or chicken broth instead. Taste before adding salt, since broth can be salty.
- Jalapeño: Use a pinch of crushed red pepper for heat, or leave it out for a milder soup.
- Cotija: Crumbled feta is a good substitute. It is also salty, so taste the soup before adding more salt.
- Poblanos: Use roasted Anaheim peppers for a similar mild, earthy flavor. For a hotter topping, add a little roasted jalapeño.
Watch Out for These Mistakes
First, take care when cutting the kernels from the cobs. A steady cutting board and a sharp knife make the job easier. Keep the blade pointed down and cut away from your hand. Also, measure the kernels after cutting so the soup has the intended balance of corn and broth.
Next, avoid cooking the corn kernels for too long. They only need 1 to 2 minutes in the simmering liquid, until they turn bright yellow. If they cook much longer, they can lose their fresh, sweet flavor.
When charring the poblanos, blacken the skin all over, then cover the peppers so they can steam. This loosens the skin and makes peeling easier. However, do not rinse them for too long, since excess water can wash away some of their roasted flavor.
Finally, blend hot soup carefully. If using a countertop blender, work in small batches and vent the lid according to the blender’s instructions. Hot liquid expands as it blends, so never fill the container to the top. After blending, taste and adjust the salt, pepper, and lime. If the corn tastes less sweet than expected, add a small pinch of sugar.
What to Serve With Sweet Corn Soup with Roasted Poblanos?
For a simple meal, serve this soup with warm crusty bread or soft corn tortillas for dipping. A crisp green salad with a light lime dressing adds a fresh contrast, while quesadillas make the meal more filling. You could also pair it with black bean salad for a hearty, colorful side that complements the corn and poblano flavors.
Storage Instructions
Store: Let the soup cool, then place it in an airtight container and refrigerate for up to 2 days. Keep the chopped roasted poblanos in a separate covered container for up to 5 days.
Freeze: Freeze the soup in airtight, freezer-safe containers for up to 3 months. Leave a little room at the top for expansion. For easier serving, freeze individual portions. Thaw the soup overnight in the refrigerator before reheating. The texture may change slightly after freezing, so stir well as it warms.
Reheat: Warm the soup in a saucepan over low to medium-low heat, stirring often. Add a splash of water if it has thickened. For the microwave, heat a portion in a microwave-safe bowl in short intervals, stirring between each one. Add the poblanos, Cotija, and hot sauce just before serving.
Recipe Info
- Preparation Time: 20 minutes
- Cooking Time: 20 minutes
- Total Time: 40 minutes
- Difficulty: Easy
- Servings: 6
- Calories: About 250 kcal per serving
Estimated Nutrition
Estimated nutrition for the whole recipe (without optional ingredients):
Per serving, estimates are 230 to 270 calories, 6 to 9 grams of protein, 12 to 16 grams of fat, and 28 to 35 grams of carbohydrates. Actual values may vary with the size and sweetness of the corn, the amount of Cotija used, and the brands of ingredients.
Ingredients
- 6 ears of sweet corn
- 4 tablespoons butter
- 1 medium onion, diced
- Salt and black pepper (freshly ground)
- 1 jalapeño, seeded and finely diced
- 2 small garlic cloves, minced
- 1 teaspoon ground cumin
- ½ teaspoon dried oregano
- 1 medium Yukon gold potato, finely diced
- 5 ½ to 6 cups water (5 ½ cups for warm soup, 6 cups for chilled)
- Juice of ½ lime, plus wedges for serving
- 2 poblano peppers
- ½ cup crumbled Cotija cheese
- Hot sauce (Cholula preferred)
- Diced or sliced avocado (optional, chilled version only)
Step-by-Step Instructions
Step 1: Cut the Corn and Start the Base
Cut the kernels from the ears of corn and measure out 5 cups. Set the kernels aside and keep the cobs. Melt the butter in a large saucepan over medium heat. Add the diced onion with a little salt and freshly ground black pepper. Cook, stirring now and then, for about 5 minutes, until soft and lightly golden.
Step 2: Add the Aromatics and Simmer
Stir in the jalapeño, garlic, cumin, and oregano. Cook for 1 to 2 minutes, until fragrant. Add the diced potato and stir to coat it in the butter. Pour in 5 ½ cups of water for warm soup or 6 cups for chilled soup, then add the corn cobs. They do not need to be fully covered. Season with salt and pepper, bring to a boil, then reduce the heat and simmer for 10 minutes.
Step 3: Char and Steam the Poblanos
While the soup simmers, char the poblanos over a gas flame or under the broiler. Turn them as needed until the skin is blackened all over. Place the peppers in a bowl and cover it tightly so they steam. Once they are cool enough to handle, peel off the charred skin, rinse them briefly, remove the seeds and veins, and finely chop.
Step 4: Add the Corn and Blend
Remove and discard the cobs. Add the corn kernels and season generously with salt and pepper. Simmer for 1 to 2 minutes, just until the kernels turn bright yellow. Puree the soup in batches in a blender, or use an immersion blender directly in the pot. Stir in the lime juice, then taste and adjust the seasoning. If the corn is not very sweet, add a small pinch of sugar.
Step 5: Serve Warm or Chill
For warm soup, reheat it gently over low heat. Add a little water if you would like a thinner texture. For chilled soup, refrigerate it until cold. It will thicken as it cools, so stir in a splash of water if needed before serving.
Step 6: Add the Toppings
Ladle the soup into bowls and top with chopped roasted poblanos, Cotija, and a drizzle of hot sauce. For chilled soup, add diced or sliced avocado if you like. Serve with lime wedges on the side.
Step 7: Store Any Leftovers
Refrigerate leftover soup for up to 2 days, or freeze it for up to 3 months. Store the chopped roasted poblanos separately in the refrigerator for up to 5 days.
Conclusion
This sweet corn soup combines fresh corn, tender potato, warm spices, roasted poblanos, and bright lime in a bowl you can serve hot or cold. The steps are straightforward, and the toppings make it easy for everyone to customize a serving. Try it for your next family meal, then share how you served it or what toppings you loved.
Sweet Corn Soup with Roasted Poblanos
Ingredients
Method
- Cut the kernels from the ears of corn and measure out 5 cups. Set the kernels aside and keep the cobs.
- Melt the butter in a large saucepan over medium heat. Add the diced onion with a little salt and freshly ground black pepper. Cook for about 5 minutes until soft and lightly golden.
- Stir in the jalapeño, garlic, cumin, and oregano. Cook for 1 to 2 minutes until fragrant.
- Add the diced potato and stir to coat in butter. Pour in 5.5 cups of water for warm soup or 6 cups for chilled soup, then add the corn cobs.
- Season with salt and pepper, bring to a boil, then reduce the heat and simmer for 10 minutes.
- While the soup simmers, char the poblanos over a gas flame or under the broiler until skin is blackened all over.
- Place the peppers in a bowl and cover tightly to steam. Once cool, peel off the charred skin, rinse, remove seeds and veins, and finely chop.
- Remove and discard the corn cobs. Add the corn kernels and season with salt and pepper. Simmer for 1 to 2 minutes until bright yellow.
- Puree the soup in batches in a blender or use an immersion blender. Stir in the lime juice and adjust seasoning.
- For warm soup, reheat gently and add a little water if needed. For chilled, refrigerate until cold.
- Ladle the soup into bowls and top with chopped roasted poblanos, Cotija, and hot sauce. Add avocado for the chilled version.
- Let the soup cool and refrigerate for up to 2 days. Freeze for up to 3 months, leaving room for expansion.
- Reheat using low heat on the stovetop or in short intervals in the microwave, adding broth if it thickens.
