Butterscotch Yams

6 medium yams -- cooked (but not to mushy stage), peeled, sliced/quartered
1/2 cup light or dark Karo syrup
1/2 cup firmly packed brown sugar
1/4 cup heavy cream or half-n-half
2 tablespoons butter
1/2 teaspoon salt
1 1/2 teaspoons cinnamon

Arrange yams in a single layer in 9x13 baking dish. Combine remaining ingredients in saucepan and bring to a boil. Stirring constantly, boil 5 minutes. Pour over yams. Bake 25-30 minutes at 325 degrees, basting occastionally, until glazed.