Mississippi Mud Potatoes
Mississippi Mud Potatoes is the ultimate comfort food casserole — layers of tender russet potatoes, crispy crumbled bacon, sharp cheddar, Monterey Jack, and tangy sour cream all brought together with ranch seasoning and garlic. The name says it all: this dish is gloriously messy, indulgent, and absolutely irresistible. Perfect for potlucks, holiday gatherings, or any night you need serious comfort food, it comes together with affordable pantry staples and can even be prepped the night before.
Equipment
- 9x13 inch baking dish - 23x33 cm; glass or ceramic recommended
- Large pot - For boiling potatoes
- Heavy-bottomed skillet - For cooking bacon evenly; cast iron preferred
- Colander - For draining parboiled potatoes
- Large mixing bowl - For combining the creamy mixture
- Sharp knife and cutting board - For prepping potatoes and green onions
- Potato masher or fork - For achieving the perfect chunky-mashed texture
- Cheese grater - Recommended for shredding cheese from a block for better melting
- Aluminum foil - For covering dish during first bake phase
- Oven mitts - For safe handling of hot casserole dish
Ingredients
- 5 lbs russet potatoes - 2.3 kg, peeled and cut into 1-inch (2.5 cm) cubes
- 1 lb thick-cut bacon - 450g, cooked until crispy and crumbled
- 2 cups sour cream - 480g, full-fat for best results
- 1½ cups sharp cheddar cheese - 150g, shredded — for mixing into casserole; shred from block for best melt
- ½ cup sharp cheddar cheese - 50g, shredded — reserved for topping
- 1 cup Monterey Jack cheese - 100g, shredded
- 1 cup whole milk - 240ml
- ½ cup unsalted butter - 115g, melted
- 1 packet ranch seasoning mix - 1 oz / 28g
- 4 garlic cloves - minced
- 1 tsp salt - 5g, plus more to taste; also 1 tablespoon for the boiling water
- 1 tsp black pepper - 2g
- ½ tsp paprika - 1g
For Garnish
- 3 green onions - thinly sliced on a diagonal
- cooking spray or butter - for greasing the baking dish
Instructions
- Place cubed potatoes in a large pot, cover with cold water by 1 inch, add 1 tablespoon of salt, and bring to a boil. Cook on medium-high for 8–10 minutes until fork-tender but still holding their shape, then drain thoroughly and let steam dry for 2–3 minutes.
- Return drained potatoes to the pot and use a potato masher to roughly mash about half of them, leaving the rest in chunks for that signature "muddy" texture.
- Lay bacon strips in a cold heavy-bottomed skillet, turn heat to medium, and cook 12–15 minutes, flipping occasionally, until crispy. Drain on paper towels, cool, then crumble into bite-sized pieces, reserving ¼ cup for topping.
- In a large bowl, whisk together sour cream, milk, and melted butter until smooth, then stir in ranch seasoning, minced garlic, salt, pepper, and paprika. Fold in the 1½ cups cheddar, all the Monterey Jack, and most of the crumbled bacon.
- Preheat oven to 350°F (175°C) and generously grease a 9x13 inch baking dish with cooking spray or butter, including the sides and corners.
- Fold the potatoes into the creamy cheese mixture until every piece is coated, then spread evenly into the prepared baking dish, pressing down gently to eliminate air pockets.
- Sprinkle the reserved ½ cup of cheddar evenly over the top, then scatter the reserved ¼ cup of crumbled bacon over the cheese.
- Cover the dish tightly with aluminum foil (tented so it doesn't touch the cheese) and bake for 45 minutes.
- Remove the foil and bake an additional 25–30 minutes until the top is golden brown, the cheese is lightly crispy, and the edges are bubbling.
- Let the casserole rest for 10 minutes to set up, then top with sliced green onions and serve immediately with a large spoon, scooping all the way to the bottom to get every layer.
Notes
- Don't overcook the potatoes: Test with a fork at 8 minutes — they should be tender but still hold their shape. Overcooked potatoes turn watery.
- Drain well: Let parboiled potatoes steam dry in the colander for 2–3 minutes to prevent a watery casserole.
- Shred your own cheese: Pre-shredded cheese contains anti-caking agents that prevent smooth melting. Freshly grated cheese makes a big difference.
- Cool bacon before crumbling: Hot bacon will release grease into the mixture, making it oily rather than creamy.
- Don't skip the rest time: The 10-minute rest after baking lets the casserole set up so you get clean, scoopable servings.
- Make-ahead friendly: Assemble up to 24 hours ahead, refrigerate covered, then let sit at room temperature 30 minutes before baking. Add 5–10 minutes to bake time.
- Freezing: Freeze for up to 3 months wrapped tightly in plastic wrap then foil. Slightly underbake if you plan to freeze. Thaw overnight in the refrigerator before reheating.
- Reheating leftovers: Add a splash of milk or dollop of sour cream before reheating to restore creaminess. Reheat in a 350°F oven covered with foil for 15–20 minutes, or microwave on medium power 2–3 minutes.
- Extra richness: Drizzle 1–2 tablespoons of reserved bacon fat over the top before the final uncovered bake for an extra-decadent result.
- Potato swap: Yukon Gold potatoes can substitute for russets and will yield a creamier, more buttery texture. Avoid red or new potatoes — they're too waxy for this dish.
Nutrition
Serving: 1ServingCalories: 445kcalCarbohydrates: 32gProtein: 16gFat: 28gSaturated Fat: 14gPolyunsaturated Fat: 2gMonounsaturated Fat: 9gCholesterol: 68mgSodium: 685mgPotassium: 685mgFiber: 2gSugar: 3gVitamin A: 12IUVitamin C: 18mgCalcium: 22mgIron: 8mg
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