This simple, grandmother-approved side dish quietly steals the show. Potatoes, buttermilk, and butter bake together to create crispy, golden skins and fluffy, creamy centers. It’s warm, reliable, and the perfect companion to roast chicken, meatloaf, or pan-fried pork chops.
| Prep Time | Cook Time | Total Time | Servings |
|---|---|---|---|
| 10 minutes | 1 hr 30 minutes | 1 hr 40 minutes | 4–6 |
Ingredients
The Essentials
- 2 lbs small to medium russet or Yukon Gold potatoes, scrubbed and dried
- 2 cups full-fat buttermilk, well shaken
- 4 tbsp unsalted butter, cut into small pieces
Optional Seasoning
- 1 tsp kosher salt (to taste)
- ½ tsp freshly ground black pepper (to taste)
Instructions
- Preheat and Prep: Preheat your oven to 375°F (190°C). Lightly butter or spray a 9×13-inch glass casserole dish to prevent sticking.
- Prepare the Potatoes: Scrub the potatoes well and pat them completely dry (leave the skins on). If any potatoes are larger than a small fist, cut them in half lengthwise so they cook evenly.
- Arrange the Dish: Place the whole or halved potatoes in a single layer in the glass casserole dish. If using halved potatoes, place them cut-side down. They should be nestled close together but not stacked.
- Add the Buttermilk and Butter: Pour the buttermilk evenly over the potatoes. The liquid should come about halfway to three-quarters up the sides of the potatoes, but not completely cover them. Dot the tops of the potatoes with the small pieces of butter, and sprinkle evenly with salt and pepper.
- Bake Covered: Cover the dish tightly with aluminum foil. Bake for 45–55 minutes, until the potatoes are just tender when pierced with a fork. (Note: The buttermilk will look slightly separated and thickened at this stage—that is exactly what you want!)
- Bake Uncovered: Carefully remove the foil. Gently spoon some of the thickened buttermilk over the tops of the potatoes. Return the uncovered dish to the oven and bake for another 25–35 minutes, or until the skins are golden brown and crisp and the centers are very soft.
- Rest and Serve: Remove from the oven and let the dish rest for 5–10 minutes. The buttermilk will settle into a rich, spoonable cream. Serve the potatoes hot, spooning the creamy sauce from the bottom of the dish over each portion.
Common Mistakes to Avoid
- Not drying the potatoes: Water is the enemy of crispiness! If you don’t pat the potatoes completely dry after scrubbing them, the skins will steam rather than crisp up in the butter.
- Using low-fat buttermilk: The recipe specifically calls for full-fat buttermilk for a reason. Low-fat or fat-free versions lack the necessary milk fat to create a rich sauce and will curdle too harshly in the oven.
- Baking uncovered the whole time: Don’t skip the foil in the first step! If you bake them uncovered the entire time, the buttermilk will evaporate too quickly and the tops will burn before the potatoes are cooked all the way through.
Frequently Asked Questions (FAQs)
Q: Can I prepare this ahead of time?
A: Yes! You can assemble the dish right up through adding the buttermilk and butter. Cover it tightly and refrigerate for up to 8 hours. When you are ready to bake, just add an extra 5–10 minutes to the covered baking time since the dish will be starting from cold.
Q: How can I make the skins even crispier?
A: Prick the potatoes a few times with a fork and rub them lightly with a bit of softened butter before arranging them in the baking dish.
Q: Can I make the sauce richer?
A: Absolutely. If your family prefers a richer, more indulgent texture, you can swap ½ cup of the buttermilk for heavy cream.
Q: How do I reheat the leftovers?
A: Reheat leftovers beautifully by covering the dish with foil and warming it in a 325°F (165°C) oven until heated through. Alternatively, you can mash the leftover potatoes together with the thickened buttermilk cream for an incredibly easy next-day mashed potato side!
