Cape Cod Mashed Potato Casserole
A creamy, cheesy potato casserole with a tangy sour cream base and a crispy Parmesan topping—comforting, rich, and perfect for family dinners or holiday gatherings.
Ingredients
Instructions
- Cook potatoes until tender, then mash well.
- Add sour cream, cottage cheese, grated onion, margarine, pepper, and salt; mix until smooth.
- Transfer mixture to a casserole dish.
- Sprinkle grated Parmesan cheese over the top.
- Bake at 350°F for 60 minutes, checking for golden browning after 45 minutes.
Tips & Substitutions
For a creamier texture, consider substituting half of the margarine with butter. You can also use Greek yogurt in place of sour cream for added tanginess. If you're short on time, opt for pre-made mashed potatoes. Be cautious not to overmix the potato mixture to keep it fluffy. Adding herbs like chives or parsley can elevate the flavor as well.
Serving Suggestions
This Cape Cod Mashed Potato Casserole is perfect as a side dish for roasted meats or grilled vegetables. It pairs beautifully with raised buttermilk biscuits or a fresh garden salad. For a complete meal, serve alongside grilled chicken or beef, and finish with a dessert like blueberry ice cream pie for a delightful contrast.
Storage & Reheating
Store leftovers in an airtight container in the refrigerator for up to 4 days. To reheat, place the casserole in the oven at 350°F for 20-30 minutes until heated through. You can also microwave individual portions, covering them to retain moisture, for about 2-3 minutes on high.
Nutrition & Diet Analysis (per serving)
Each serving of Cape Cod Mashed Potato Casserole contains roughly 974 calories, with 16g protein, 136g carbohydrates, and 41g fat. It is an excellent source of vitamin C (85% of the Daily Value), potassium (67% of the Daily Value), and dietary fiber (44% of the Daily Value), and a good source of iron and calcium. Note that it is relatively high in sodium, at 1418mg per serving (62% of the Daily Value).
Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.
* % Daily Values based on a 2,000 calorie diet (FDA 2020).
Frequently Asked Questions
Can I prepare the casserole ahead of time?
Yes, you can prepare the casserole up to a day in advance. Simply assemble it, cover tightly with plastic wrap, and refrigerate. When ready to bake, remove the wrap and bake as directed, adding a few extra minutes if it's coming straight from the fridge.
What can I do if the potatoes are too watery?
If your potatoes are too watery after mashing, try draining them in a colander to remove excess moisture. You can also add a bit more cottage cheese or Parmesan cheese to help absorb the liquid, ensuring a thicker consistency in your casserole.
Is this recipe suitable for freezing?
Yes, this casserole can be frozen. Prepare it as directed, then let it cool completely before covering tightly with foil or plastic wrap. Freeze for up to 2 months. To reheat, thaw overnight in the refrigerator and bake as usual, adjusting the time as needed.
Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).