The choice of potato matters more in this recipe than in almost any other.

Russet potatoes are high-starch — about 22% starch by weight, with low moisture and a floury texture when cooked. When you mash half the russets directly into the soup, the disrupted cells release starch granules that absorb liquid and gelatinize, thickening the broth into a creamy body without any flour or cornstarch. The soup thickens itself.

Yukon Gold potatoes are medium-starch (15–18%) and hold their shape better when cooked. A Yukon Gold soup tends to have cleaner, firmer chunks in a thinner broth. That can be appealing, but it is not what most people picture when they think of loaded baked potato soup — which should be thick and velvety, not a potato stew.

The bottom line: use russets. They are usually cheaper, they are the correct potato for the restaurant versions people are trying to replicate, and the natural starch thickening is one of the elegant things about this recipe.

This is the single most important step.

After the cubed potatoes have simmered until fork-tender (15–18 minutes — a fork should slide through with zero resistance), you mash approximately half of them directly in the pot using a potato masher. The mashed portion does three things:

1. Releases starch that immediately starts thickening the surrounding broth.
2. Provides a creamy, smooth backdrop that contrasts with the remaining whole chunks.
3. Makes the soup feel substantial and filling without adding any extra thickener.

The ratio is adjustable. More mashing = thicker, smoother, closer to a creamy bisque. Less mashing = chunkier, more like a potato stew. The classic loaded baked potato soup sits in the middle — half-and-half — so every spoonful has both cream and bite.

Do not use an immersion blender for this. Blenders develop a smooth liquid and eliminate all texture. A potato masher gives you control.

Butter is not wrong here, but bacon fat is better.

Rendering the bacon first and cooking the onion in the drippings adds a layer of smoky, savory depth that butter cannot replicate. The fat that renders out of six strips of thick-cut bacon is about 3–4 tablespoons — enough to properly sauté the onion without adding anything extra.

Do not skip cooking the onion. Raw onion added directly to the broth takes much longer to soften and retains a harsh, sharp bite that the cooked version does not. Four to five minutes in the bacon fat — until the onion is translucent and soft — builds a foundation that makes the finished soup taste more developed.

The half-mash technique thickens the soup naturally through potato starch, and for most home cooks it is enough. But if you want a more controlled, velvety result — or if you plan to use a higher broth-to-potato ratio — a flour roux gives you more insurance.

After cooking the aromatics in the bacon fat, add 3 tablespoons of butter and stir in 3 tablespoons of all-purpose flour. Cook the roux for 2 minutes over medium heat, stirring constantly, until it smells faintly nutty and loses its raw flour taste. Then pour in the chicken broth while whisking — the roux will prevent lumps from forming. Proceed with adding the potatoes and simmering as normal.

A roux-based version is slightly denser and more reliably thick regardless of how much you mash. It is the approach most restaurant versions use. The trade-off is a minute or two of extra work and a small amount of flour in the recipe for those who are gluten-sensitive.

Loaded baked potato soup is a dairy-heavy recipe, and dairy misbehaves at high heat. Two specific rules prevent problems:

Add sour cream off heat. Sour cream curdles — separates into watery liquid and grainy white solids — when exposed to high heat. If you stir sour cream into a boiling or even strongly simmering soup, you will get a broken, grainy result that cannot be fixed. The correct procedure: remove the pot from the burner entirely, then add the sour cream a tablespoon at a time while stirring gently. The residual heat is enough to warm and incorporate it without breaking it.

Shred the cheese yourself. Pre-shredded cheddar in bags is coated with cellulose (powdered wood fiber) and potato starch to prevent clumping in the bag. Those coatings are food-safe, but they coat the cheese surfaces and prevent the proteins and fats from melting into a smooth sauce. Block cheddar, freshly grated, melts into the soup cleanly. The difference in mouthfeel is significant — grainy and particulate vs. smooth and velvety.

When to add the cream: Add the heavy cream after the mashing step, while the soup is still on low heat. Let it simmer for 3–4 minutes to fully integrate with the potato starch. Then remove from heat and add sour cream and cheese.

Potatoes need substantial salt. The starch absorbs salt aggressively, and an under-seasoned potato soup tastes flat no matter what else goes into it. Season the broth before adding the potatoes, and taste again after the dairy goes in — the cream and sour cream will dilute the salt slightly, and the finished soup almost always needs another ¼ to ½ teaspoon.

Sharp cheddar, not mild. The cream and potatoes are rich and slightly sweet; the cheese needs enough sharpness to cut through them. Extra-sharp aged cheddar is even better. Mild cheddar disappears into the soup and leaves a generic “cheese flavor” rather than a recognizable one.

For a hands-off version, the slow cooker works well. The main adjustment: cook the bacon on the stovetop separately, since slow cookers cannot render bacon.

1. Cook bacon in a skillet until crispy. Set aside; keep 2 tbsp of the rendered fat.
2. In the slow cooker, combine cubed russet potatoes, chicken broth, diced onion, garlic, the reserved bacon fat, salt, and pepper.
3. Cook on low 4–6 hours or high 2–3 hours until potatoes are very tender.
4. Mash half the potatoes with a masher directly in the slow cooker.
5. Switch the slow cooker to the warm setting. Stir in heavy cream. Then add sour cream off heat and shredded cheddar.
6. Top bowls with reserved bacon and the rest of the toppings.

The slow cooker version tastes identical to the stovetop version. The only practical trade-off is that you cannot control the timing of the dairy as precisely — but keeping the setting on warm (not low or high) when adding the dairy avoids the curdling problem.

Pressure cookers reduce the cooking time significantly.

1. Use the sauté function to cook bacon, then sauté onion in the fat.
2. Add potatoes, broth, garlic, salt, pepper. Seal and cook on high pressure for 8 minutes, then natural release for 5 minutes.
3. Open, mash half the potatoes.
4. Switch to the sauté function on low. Add heavy cream and let it simmer 2 minutes.
5. Turn off the Instant Pot. Stir in sour cream and shredded cheddar.

Refrigerator: 3–4 days in an airtight container. The soup thickens significantly as it cools because the potato starch continues to absorb liquid. Add a splash of chicken broth or milk when reheating and stir to loosen.

Reheating: Low heat, with stirring. The dairy in the soup is sensitive — high heat can break the sour cream and separate the cream. Warm on medium-low, stir frequently, and don’t rush it.

Freezer: Not recommended for the finished soup. Cream separates when frozen and thawed, and the potatoes turn grainy and waterlogged. If you want to freeze it, prepare just the potato-and-broth base (steps 1–4 in the recipe, before any dairy), freeze that portion for up to 3 months, and add the cream and dairy when you reheat.

Crockpot cheese: Some versions add Velveeta or Kraft processed cheese to the base instead of cheddar — it melts more evenly and doesn’t risk graininess. The flavor is less complex than sharp cheddar, but if you are cooking for a crowd and want foolproof smoothness, a 4-oz block of Velveeta stirred in with the dairy does produce a consistently creamy result.

O’Charley’s style: The widely-shared copycat recipes for O’Charley’s distinctive potato soup use Velveeta instead of block cheddar and red potatoes instead of russets. The red potatoes hold their shape better (cube-intact rather than mash-thickened), and Velveeta melts without breaking at any heat — no risk of graininess. Add garlic powder and a few drops of hot sauce to the base. To approximate it, substitute 8 oz of cubed Velveeta for the shredded cheddar and use red potatoes rather than russets; skip the half-mash step since red potatoes stay firm.

Broccoli cheddar hybrid: Add 2 cups of small-cut broccoli florets in the last 5 minutes of simmering and use mostly cheddar in the base. This is a bridge between loaded potato soup and Panera-style broccoli cheddar — satisfying if you want vegetables but don’t want to give up the potato base.

Green onion vs. chives: Green onion tops and chives are interchangeable as toppings. Chives are thinner, milder, and more delicate. Green onion tops have more bite and more visual presence. Either is correct.

	Restaurant (per bowl)	Homemade (per serving)
TGI Fridays Loaded Potato Soup	~$8.99	—
O’Charley’s Potato Soup	~$6.99	—
Full homemade batch (6 servings)	—	$14–16 total ($2.50/serving)

The cost advantage for a full homemade batch is significant — the same amount of soup that would cost $45–55 at a restaurant costs under $16 to make at home.

• Copycat Panera Broccoli Cheddar Soup — the creamy cheese soup technique shares a lot with this recipe; covers the cheese-roux base that Panera uses vs. the potato-starch method here.
• Copycat Cracker Barrel Hash Brown Casserole — frozen hash browns, cream of chicken soup, cheddar, and onion; same comfort-food register but baked.
• Copycat KFC Mashed Potatoes and Gravy — the technique breakdown for why KFC potatoes taste different from homemade (instant potato flakes + chicken gravy base).
• Copycat Bob Evans Mashed Potatoes — for when you want the potato side without the soup format; covers the Bob Evans butter-and-cream ratio.