What ingredients do I need for loaded baked potato soup?
This soup uses a short list of everyday ingredients, each with a specific job. The amounts below serve four generous bowls and take about an hour.
- 1.2 kg floury potatoes (Russet or Maris Piper), peeled and cut into 2 cm cubes. Floury potatoes break down just enough to thicken the soup and leave tender bites. Waxy potatoes stay too firm and give a watery result.
- 200 g smoked streaky bacon, sliced into thin strips. You render the fat first to fry the aromatics, then scatter the crispy bits on top. The smoky fat carries the whole flavour base.
- 1 medium brown onion and 2 garlic cloves, both finely chopped. Onion adds sweetness and body once softened in bacon fat. Garlic goes in for the last minute so it warms through without burning.
- 30 g plain flour. A small amount stirred into the hot fat coats the onion and thickens the milk broth gently, giving the soup a velvety consistency without heaviness.
- 750 ml whole milk and 250 ml chicken stock. Whole milk gives the soup its creamy character. The stock adds savoury depth and keeps the dairy from tasting flat.
- 150 g mature Cheddar, grated, plus 150 ml sour cream. You stir both in off the heat so the cheese melts smoothly and the sour cream adds tang. Grating your own cheese avoids the anti caking agents that can make the soup grainy.
How do I make the soup step by step?
Start by frying 200 g of chopped streaky bacon in a large pot over medium heat for about 6 minutes until crisp. Scoop the bacon out with a slotted spoon and leave the rendered fat in the pot. That fat carries all the smoky flavour; you will use it to soften the vegetables.
Add one chopped onion and two minced garlic cloves to the same pot and cook for 4 minutes, stirring now and then, until the onion turns translucent. Sprinkle in 3 tablespoons of plain flour and stir constantly for 90 seconds. Cooking the flour briefly removes the raw taste and gives you a thick, velvety soup without lumps.
Slowly pour in 800 ml of whole milk while whisking, then add 400 ml of chicken stock and 700 g of peeled, diced floury potatoes such as Maris Piper. Bring everything to a gentle boil, then lower the heat and simmer for 15 minutes until a fork slides through the potato with no resistance. Stir in 200 g of grated mature cheddar and 100 ml of sour cream off the heat, then blend roughly half the soup with a stick blender, keeping some chunks for texture. Taste, season with salt and black pepper, and serve with the reserved bacon on top.
How do I get the creamiest texture without it turning gluey?
Overworking potatoes releases too much starch, turning the soup gluey instead of silky. Choose waxy potatoes such as Yukon Gold or red varieties. They hold their shape and thicken the soup gently without breaking down into a paste. Russets are too starchy for this recipe and will give you a gummy result.
Blend only part of the soup. Scoop out about two cups of the cooked potatoes and liquid, blitz them until smooth in a stand blender, then stir that puree back into the pot. Never use a stick blender directly in the whole pot; you cannot control how much gets pureed and risk overworking every potato piece. Leaving the rest of the potatoes in small, tender chunks gives you the classic baked potato texture.
Dairy gives the soup a rich body, but high heat makes it separate and turn grainy. Take the pot off the heat before stirring in the soured cream and cheese. Warm them through gently with the residual heat rather than boiling them. Full-fat soured cream and freshly grated cheddar that melts smoothly give the most velvety finish.
Can I make this soup ahead or freeze it?
You can make the soup base ahead and freeze it, but hold off on adding the cream and toppings until you reheat. Cook the soup right up to the point where you would stir in the soured cream, then cool it quickly. Pour the base into airtight containers and refrigerate for up to three days. For freezing, leave 2 cm of headspace and use within one month. The potatoes will soften a little more after freezing, but the flavour stays deep and smoky.
Reheat the base gently in a saucepan over medium-low heat, stirring now and then. Once it is steaming, take the pan off the heat and whisk in your cream. This keeps the dairy from splitting or turning grainy. If the soup feels too thick after reheating, loosen it with a splash of warm chicken stock or whole milk, a tablespoon at a time. Never boil the soup after the cream goes in.
Add every topping fresh just before serving. Crispy bacon, shredded cheese, snipped chives and a dollop of soured cream lose their charm if they sit in the fridge or freezer. Keep a little bowl of each ready in the fridge while the soup reheats, and let everyone build their own loaded bowl at the table.
What are the best toppings and easy swaps?
The classic finish for loaded baked potato soup is a scatter of sharp cheddar, crisp bacon bits, sliced spring onions and a spoonful of sour cream. These toppings work best on hot soup, so ladle the bowl first, then pile everything on just before serving. The heat from the soup will melt the cheese gently without turning it stringy.
For a lighter version, swap half the cheddar for a sharp, crumbly white cheese like feta and replace the bacon with toasted sunflower seeds or smoked paprika chickpeas. You keep the salty, crunchy contrast but cut the richness. Vegetarians at the table will appreciate the same smoky depth without the meat.
- Swap bacon for smoked almonds or crispy fried shallots to keep the crunch and smoky note.
- Use plain Greek yogurt instead of sour cream for more protein and the same tangy finish.
- Skip the cheddar and try grated Gruyère or a mature Gouda that melts smoothly.
- Add a spoonful of pickled jalapeños or a dash of hot sauce when you want a warm, vinegary kick.
- Stir a teaspoon of Dijon mustard into the soup base before adding the potatoes for a deeper savoury backbone.
- Make it dairy free by finishing with a drizzle of good olive oil and a sprinkle of nutritional yeast for a cheesy note.
Frequently asked questions
Can I leave the skins on the potatoes?
Yes. Scrubbed, unpeeled potatoes add extra fibre and a slightly earthier flavour. If you want a completely smooth soup, peel them first. For a middle ground, leave the skins on half the potatoes so you keep some texture without it becoming chewy.
My soup turned out gluey. What went wrong?
Over-blending or using a food processor breaks down potato starch too much and releases a paste-like consistency. Use a potato masher or a hand blender in short pulses, and stop as soon as the soup looks creamy. Waxy varieties like red potatoes also help prevent glueyness.
How do I reheat the soup without the cream curdling?
Reheat gently over low heat and stir often. If you used double cream, take the soup off the heat before stirring it in during the initial cooking. When reheating, avoid bringing it to a rolling boil. A splash of fresh milk stirred in at the end can bring back the creamy texture.
What can I use instead of bacon?
Smoked paprika and a little butter give a similar smoky depth. For a vegetarian version, top the soup with crispy fried onions, toasted breadcrumbs or extra sharp cheddar. A spoonful of sour cream on each bowl keeps the loaded baked potato feel.
Photo: RDNE Stock project, Pexels (Pexels License)