Peel, slice and salt the eggplants. Let sit for 1/2 hour until juice runs out. Drop into boiling water for 2 minutes and drain (this takes the bitterness out of the eggplant).
Peel and stem mushrooms.
Simmer stems and peelings in two, 1/2 cups water for 15 minutes.
Heat oven to 400 degrees.
Chop mushroom caps and sauté in 2 Tsp. butter.
Sauté onions, garlic in bacon fat.
Add flour and blend.
Add stock from mushroom stems ad stir until thickened and smooth.
Add eggplant, sautéed mushrooms, lamb and oregano.
Pile into a buttered 2 qt casserole.
Cover with crumbs and dot with butter.
Bake 30 minutes.
Optional Add tomatoes to this recipe which makes it more like a ratatouille with lamb.