Shepherd's Pie
Saute a collection of vegetables, such as:
cabbage, chopped coarsely
carrots, grated
onions, thinly sliced
in some olive oil.
 
Add:
a dash red wine
salt, to taste
     
 When the vegetables start to get soft , cover and turn off the heat .  Keep covered for 15 minutes or so, then transfer it all to a baking dish.
   
Make a topping of:
mashed potatoes
milk, enough to make it creamy
1 - 3 T butter, soft or melted
a few garlic cloves, mashed
and spread it over the vegetables.  Bake at 350 until bubbly and the top has just started to brown.
Notes & Variations:
  1. This is a great way to use leftover mashed potatoes, as well as leftover cooked vegetables.
  2. Try adding some italian sausage to the vegetables.  Other additions include fresh rosemary or other herbs, a few tablespoons of tomato paste, a dash of balsamic vinegar.
  3. Some chopped chives and/or parsley can be added to the potato topping.