Instructions: Preheat the oven to 350 degrees. Coat an 8-inch square baking dish with nonstick cooking spray.

In a medium bowl, combine the mashed potatoes, 2 tablespoons melted butter, the dill, and pepper; mix well and set aside.

In another medium bowl, mash the yams, then add the lemon peel and the remaining 2 tablespoons melted butter; mix well.

Spoon five equal-sized scoops of the yam mixture into the baking dish, placing one scoop in each corner and one scoop in the center. Using a spoon, shape each scoop into a square.

Place the mashed potato mixture in the four empty squares, dividing it equally. Pat down evenly to fill any gaps, forming a checkerboard pattern.

Bake for 45 to 50 minutes, or until heated through.

This recipe yields 10 servings.

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