1. Use canned sweet potatoes or yams drained and mashed to save time 2. Swap pecans with walnuts or omit nuts and add 1/2 cup rolled oats for crunch 3. Reduce brown sugar to 1/3 cup in the base for a less sweet casserole 4. Assemble unbaked casserole up to 24 hours ahead and bake from cold adding 5 to 10 minutes 5. Add 1 cup mini marshmallows during the last 5 minutes for a classic variation