This Old-Fashioned Potato Soup Recipe is the kind of meal that feels like it belongs to another, slower time. It is simple, humble, and deeply comforting, made with ingredients that have been feeding families for generations. Every time I make it, it feels like stepping into a warm kitchen where nothing is rushed and everything is familiar.
Old-fashioned potato soup has always held a special place in our home. It is not flashy or heavily seasoned, but it carries a quiet richness that comes from careful cooking and simple ingredients. This is the soup that shows up on cold evenings, sick days, or moments when comfort matters more than anything else.
What I love most about this recipe is its honesty. Potatoes, milk, butter, and onions come together without trying to be anything more than what they are. The result is a soup that feels gentle, filling, and reassuring in a way that modern shortcuts often miss.
Over time, this recipe became one I return to again and again. It works when the pantry is nearly empty, when time is short, or when the day simply calls for something warm and dependable. In our kitchen, old-fashioned potato soup represents tradition, care, and the kind of comfort that never goes out of style.
Why You’ll Love This Recipe
This soup is simple, creamy, and deeply comforting. The potatoes cook until tender and naturally thicken the broth, creating a smooth texture without complicated steps. Every spoonful feels warm and familiar.
Another reason this recipe stands out is its simplicity. It relies on basic ingredients and straightforward cooking, making it accessible to cooks of any skill level. There is nothing complicated or fussy about it.
This recipe is also incredibly flexible. It can be enjoyed just as it is or lightly customized with small additions. Whether served as a main dish or alongside bread, this Old-Fashioned Potato Soup Recipe fits naturally into everyday meals.
Serves: 4–6 people
This recipe comfortably serves four to six people as a main dish. Portion sizes can be adjusted depending on sides and appetite. It also reheats well, making it great for leftovers.
Ingredients You’ll Need
- 2 tablespoons unsalted butter
- 1 medium onion, finely chopped
- 4 cups peeled and diced potatoes
- 3 cups water or milk
- 1 cup milk
- Salt, to taste
- Black pepper, to taste
Pro Tips
- Use starchy potatoes for the best texture.
- Dice potatoes evenly so they cook at the same rate.
- Cook onions slowly to keep the flavor gentle.
- Season gradually and adjust near the end.
- Do not rush the simmering process.
- Stir occasionally to prevent sticking.
Tools You’ll Need
- Large soup pot
- Cutting board
- Sharp knife
- Wooden spoon
- Measuring cups
A simple, sturdy pot is all you need for this traditional recipe.
Substitutions and Variations
Milk can be replaced with part water for a lighter soup.
Plant-based milk can be used if needed.
Butter can be replaced with margarine.
Extra milk can be added for a thinner consistency.
A pinch of dried herbs can be added for subtle flavor.
This recipe stays true to its roots while allowing small, thoughtful adjustments.
Make Ahead Tips
Old-fashioned potato soup is a wonderful recipe to make ahead because its flavor and texture hold up very well. In many cases, the soup tastes even better the next day after the ingredients have had time to settle together.
You can prepare the soup fully and store it in the refrigerator for up to three days. Allow it to cool completely before transferring it to an airtight container.
If you plan to make the soup ahead, consider waiting to add the final portion of milk until reheating. This helps keep the texture smooth and prevents the soup from becoming too thick.
Potatoes naturally continue to absorb liquid as the soup rests. When reheating, add a small splash of milk or water to loosen the consistency as needed.
This soup works especially well for simple meal prep. Portion it into containers so lunches or dinners are ready with minimal effort.
Instructions
Step 1: Melt the Butter
Place a large soup pot over medium heat.
Add the butter and allow it to melt gently without browning.
Step 2: Cook the Onion
Add the chopped onion to the melted butter.
Cook for 5 to 7 minutes, stirring occasionally, until the onion becomes soft and translucent.
Keep the heat moderate so the onion stays mild and sweet.
Step 3: Add the Potatoes
Add the diced potatoes to the pot.
Stir gently to coat them with the butter and onion mixture.
Step 4: Add Liquid
Pour in the water or milk, making sure the potatoes are mostly covered.
Increase the heat slightly and bring the mixture to a gentle simmer.
Step 5: Simmer Until Tender
Reduce the heat to medium-low.
Simmer for 20 to 25 minutes, stirring occasionally, until the potatoes are very tender.
A fork should slide easily into the potatoes without resistance.
Step 6: Lightly Mash
Using the back of a spoon or a potato masher, gently mash some of the potatoes in the pot.
This thickens the soup while keeping it rustic and traditional.
Step 7: Add Milk
Stir in the milk slowly.
Keep the heat low and allow the soup to warm through without boiling.
Step 8: Season the Soup
Add salt and black pepper to taste.
Stir well and adjust seasoning as needed.
Step 9: Rest Before Serving
Remove the soup from heat.
Let it rest for a few minutes so the texture settles before serving.
Serving Suggestions
Serve old-fashioned potato soup hot for the best comfort and flavor.
Pair with simple buttered bread or rolls.
Serve alongside a light green salad for balance.
Enjoy as a cozy lunch or easy dinner.
Add extra black pepper at the table if desired.
This soup is best enjoyed simply, just as it is.
Leftovers and Storage
Old-fashioned potato soup stores well and continues to feel comforting even after a day or two. The flavors mellow and blend as the soup rests, which many people find even more enjoyable.
Allow the soup to cool completely before storing. Transfer it to an airtight container and refrigerate, where it will keep well for up to four days.
When reheating, warm the soup gently over medium-low heat, stirring often. This helps maintain the soft texture and prevents sticking.
If the soup thickens during storage, add a small splash of milk or water while reheating. Stir until the consistency feels smooth and spoonable again.
Freezing is not recommended for this recipe. The potatoes can become grainy once thawed, which affects the classic texture.
Nutrition and Benefits
Old-fashioned potato soup offers simple nourishment made from basic, whole ingredients. It is filling without being heavy and feels gentle on the body.
Potatoes provide carbohydrates that support steady energy. They also contribute fiber and natural thickness to the soup.
Milk adds protein and calcium, helping the soup feel more satisfying and balanced. Even a modest amount adds richness.
Butter contributes flavor and satiety, allowing the soup to feel comforting without needing complex seasonings.
Because this recipe avoids excess ingredients, it is easy to pair with vegetables or bread for a balanced meal.
Recipe FAQ
Why is this called old-fashioned potato soup?
This version uses simple ingredients and traditional methods.
It relies on gentle simmering and light mashing rather than heavy cream or cheese.
Can I make this soup thicker?
Yes, mash more of the potatoes directly in the pot.
This naturally thickens the soup without adding extra ingredients.
Can I make it thinner?
Yes, add extra milk or water while reheating.
Stir slowly until the texture feels right.
What potatoes work best?
Starchy potatoes like russet potatoes work best.
They break down easily and create a soft, creamy texture.
Can I add meat?
Traditionally, this soup is meat-free.
If desired, cooked bacon or ham can be added gently at the end.
Is this soup good for kids?
Yes, the flavor is mild and familiar.
Many children enjoy its smooth texture and simple taste.
How do I know when the soup is done?
The potatoes should be very tender and easy to mash.
The soup should look lightly thickened and evenly seasoned.
A Simple Bowl That Honors Tradition
This Old-Fashioned Potato Soup Recipe brings comfort back to basics in the best possible way.
Its gentle flavor, soft texture, and familiar ingredients make it easy to return to again and again.
Whether enjoyed fresh or reheated the next day, it remains a timeless reminder that simple food can still be deeply satisfying.
