Root Vegetable Gratin

This is a hearty dish for a cool winter evening. You can vary this with any other root vegetables, such as turnips or squash.

Ingredients:
4-5 carrots
2 parsnips
5-7 Jerusalem artichokes
oil
50 g butter
3 tbsp flour
1 tsp parsley
1 tbsp mustard
2 tbsp Greek yogurt
½ cup milk
75 g cheddar

Instructions:
1. Peel and dice the vegetables (if they need to be peeled).
2. Oil or butter the casserole dish and then put the vegetables in it.
3. Melt the butter over low heat and add the flour, parsley, mustard, and yogurt. After a couple minutes, add the milk and cheddar. Continue cooking until the cheese has melted.
4. Pour the cheese sauce over the vegetables and bake at 180 C for 30 minutes.