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Old Fashioned Vegetable Soup

Old Fashioned Vegetable Soup

Old Fashioned Vegetable Soup is a comforting, easy slow cooker classic full of creamy potato, sweet corn, and tender carrots. This nourishing, cozy bowl makes an ideal easy weeknight dinner and freezes beautifully for future meals, giving you warm, satisfying comfort whenever you need it.
Prep Time 10 minutes
Cook Time 8 hours
Total Time 8 hours 10 minutes
Course Soups
Cuisine American
Servings 8 people
Calories 150 kcal

Equipment

  • Slow Cooker
  • Ladle
  • Cutting Board
  • Knife

Ingredients
  

  • 1 cup whole-kernel corn fresh or frozen Adds sweet, crisp kernels that provide natural sweetness and a pleasant pop of texture; complements the stewiness of root vegetables and balances acidity from tomato juice; use fresh or frozen interchangeably, adding frozen a bit longer to heat through.
  • 1 large potato, cut into 1 inch cubes Provides hearty, starchy body that thickens the broth slightly as it cooks; offers a comforting, earthy flavor and substantial bite in each spoonful; cube uniformly so pieces cook evenly and integrate with other vegetables.
  • 4 carrots sliced into 1/2 inch pieces Brings natural sweetness and tender texture when simmered, while contributing color and familiar soup flavor; slices release sugars that enrich the broth and meld with savory spices; cut into uniform pieces to ensure even tenderness.
  • 1 cup green beans fresh or frozen, broken into 1 inch pieces Contributes fresh vegetal bite and gentle snap that contrasts softer potatoes and carrots; adds color and fiber while absorbing surrounding flavors; break into consistent lengths to cook evenly and retain a slight crispness if desired.
  • 1 small sweet onion, diced Provides aromatic sweetness and savory depth when sautéed or simmered; releases flavorful juices that form the soup’s flavor base and meld with other vegetables; dice finely for even distribution throughout the pot.
  • 1 stalk celery diced Adds subtle aroma and mild savory crunch that enhances the soup’s base; celery’s natural salts uplift other ingredients and contribute to overall mouthfeel; dice to match the size of the onion for cohesive texture.
  • 1/2 teaspoon paprika Contributes warm, smoky undertone to the broth and accents sweetness from vegetables; a small amount brightens flavors without overpowering and pairs well with paprika-friendly ingredients; stir in early to bloom its flavor.
  • 1/2 teaspoon crushed red pepper flakes more or less to taste Adds controlled heat and a touch of warmth to the soup, allowing customization of spiciness; crushed flakes disperse through the broth providing occasional piquant bites; adjust amount to suit heat preference.
  • 1/2 teaspoon black pepper Adds mild heat and sharp aromatic spice that enhances savory notes and balances sweetness; freshly ground black pepper brightens the overall flavor profile when added toward the end of cooking; grind to taste for freshness.
  • kosher or sea salt to taste Adds essential seasoning to bring out natural flavors and create balance; kosher or sea salt enhances sweetness and savory depth but should be added gradually and adjusted to taste at the end; dissolve evenly into the broth.
  • 2 1/2 cups tomato juice optional vegetable juice Provides tangy, savory liquid base that contributes acidity and tomato character to the soup; can be substituted with other vegetable juices for different flavor profiles and adds body and color to the broth; pour in with broth to simmer.
  • 1 1/2 cups vegetable broth optional water Serves as the primary savory liquid foundation that adds depth and umami while keeping the soup light; can be swapped with water if preferred, but vegetable broth contributes extra seasoning and richness; warm before adding to maintain simmer.

Instructions
 

  • Add all ingredients to the slow cooker, stir to combine. Cover and cook on low 8-10 hours.: The moment you nestle the corn , potato , carrots , green beans , onion , celery , and seasonings into the pot you will notice a mosaic of color and scent, a layered perfume of sweetness from the vegetables and a subtle earthiness from the vegetable broth . Stirring once helps distribute the paprika , black pepper , and crushed red pepper flakes evenly so you do not end up with a single spicy pocket. While you will not be cooking on a flame, you can still sense correct balance by tasting a small spoonful of the liquids before turning the machine on; it should be lightly seasoned, slightly bright. A common mistake here is over-salting, since slow reduction concentrates saltiness. If you are unsure, err on the side of under-salting and adjust near the end.
  • Cover and cook on low 8 to 10 hours: As the cooker warms and the pot begins its leisurely bubble, the texture will evolve. Within a few hours you will smell the onion growing mellow and the carrots softening, and by midway the broth will carry a sweet, vegetal aroma that signals extraction of flavors. Low, long cooking gently breaks down starches in the potato , creating body without making everything mushy. Listen for a faint, steady simmer, and if the cooker seems too active, reduce the heat setting if your model allows. A common error is cooking on high to rush things, which can disintegrate delicate vegetables and flatten the layered flavors; patience yields a clearer, more composed bowl.

Notes

  • Tip on thickness The notes suggest removing 1 cup of soup, stirring in 2 tablespoons cornstarch, mashing vegetables, and returning the mixture for 30 minutes to thicken; this avoids floury textures and yields a silkier mouthfeel.
  • Tip on heat Add the crushed red pepper flakes sparingly at first and taste midway through cooking, because slow cooking mutes heat and you can always add more at the end for brightness.
  • Tip on using frozen produce Frozen corn and green beans are convenient and often picked at peak ripeness; add them directly without thawing to preserve texture and color.
  • Tip on salt Use kosher or sea salt in small increments and taste before serving, as liquid concentration over long cooking can suddenly make a pot taste saltier than expected.
  • Tip on liquid balance If you prefer a tangier soup, increase the proportion of tomato juice; for a more neutral broth, use extra vegetable broth or water and adjust seasonings.
Keyword classic vegetable soup, easy slow cooker vegetable soup, hearty winter soup recipe, old fashioned vegetable soup recipe