
One Potato, Two Potato Double-Layered Mash
Our dietitians' favouriteThis recipe is taken from the 2013 Milk Calendar. When you can’t decide between yellow potatoes and sweet potatoes, make both! This double-layered side dish can be served right away or made ahead to reheat in the oven later. In the photo, we’ve paired it with September’s Meatloaf for the ultimate comfort-food meal.
- Prep: 20 min
- Cooking: 1 h 5 - 1 h 20

Ingredients
- 4 yellow-fleshed potatoes (about 1-1/2 lbs/750 g)
- 2 sweet potatoes (about 2 lbs/1 kg)
- 3 cloves garlic
- Salt
- 1 cup (250 mL) milk
- 1/2 tsp (2 mL) pepper
- 1/2 cup (125 mL) sour cream or plain Greek yogurt divided
- 1/2 cup (125 mL) fresh whole wheat bread crumbs
- 1/2 cup (125 mL) shredded Canadian old Cheddar or Swiss cheese
- 2 tbsp (30 mL) chopped fresh parsley

DID YOU KNOW?
When you see the Blue Cow Logo on a product, it means it's made with 100% Canadian quality milk that meets some of the highest standards in the world.
Preparation
Peel yellow and sweet potatoes and cut into chunks (keep separate). Combine yellow potatoes, garlic and 1/2 tsp (2 mL) salt in one saucepan; add cold water to cover. Repeat with sweet potatoes and 1/2 tsp (2 mL) salt in another saucepan. Bring both pans to a boil over high heat. Reduce heat and boil gently for 10 to 15 min or until fork tender. Drain; return potatoes to pans.
Meanwhile, in a saucepan or in a microwave-safe measuring cup, combine milk and pepper. Heat over medium heat on stovetop or on Medium (50%) power in microwave until steaming, for about 3 min.
Butte
r an 11 x 7-inch (28 x 18 cm) or 8-inch (20 cm) square glass baking dish.
Mash yellow potatoes and garlic while gradually adding 3/4 cup (175 mL) of the warmed milk, half of the sour cream and 1/4 tsp (1 mL) salt. Spread into baking dish. Mash sweet potatoes while gradually adding remaining warmed milk, remaining sour cream and 1/4 tsp (1 mL) salt. Spoon on top of yellow potatoes and gently spread to cover. (Can be cooled, covered and refrigerated up to 2 days).
If casserole has been refrigerated, preheat oven to 350°F (180°C). Cover baking dish with foil and bake for 45 min to 1 hr or until heated through.
Preheat broiler. In a bowl, combine bread crumbs, cheese and parsley; sprinkle over hot potatoes in dish. Broil for about 3 min or until topping is crisp and golden.
Tips
To make a double batch for a large crowd, double all ingredients and use a 13” x 9” (3 L) baking dish. If making ahead, increase the baking time to about 75 min.
Add 2 cups (500 mL) chopped parsnips with the yellow potatoes. Use crumbled Canadian Blue cheese and add 1 tsp (5 mL) finely chopped fresh rosemary to the topping.
Nutritional information
Per servingEnergy: | 231 Calories |
Protein: | 8 g |
Carbohydrate: | 44 g |
Fat: | 3 g |
Fibre: | 6.3 g |
Sodium: | 180 mg |
Top 5 Nutrients
(% DV*) | |
---|---|
Calcium: | 14 % / 156 mg |
Magnesium: | 25 % |
Vitamin A: | 93 % |
Vitamin B6: | 28 % |
Vitamin C: | 38 % |