Pre-heat oven to 375F. Slice sweet potatoes 1/4 inch thick, then peel and slice apples 1/4-1/2 inch thick. In a small bowl, combine remaining ingredients except garnish.
In a buttered casserole dish, layer a third of the potatoes then a third of the apples. Using a spatula, spread apple layer with a third of the sugar/honey mixture. Repeat this twice.
Bake, uncovered for 50-60 minutes. Serve garnished with pecans.