Love cauliflower cheese in winter. Or broccoli & cauliflower with white sauce.
I made a sweet potato & potato bake with bacon last week and it was delicious- something a bit different to just normal potato bake. I also do potato & pumpkin mash as an alternative to mashed potato. If I'm cooking something in the oven then I'll do baked potato- peeled and chopped potato sprinkled with some sea salt & Season-All seasoning. Also do that when making potato chips, just slice the potato thinly instead of chopping it.
Occasionally use those packet pastas as side dishes, I only buy them when they are on special but they are quick and easy to prepare.