Parmesan Onion Pie - Country Living

Yield:	4 Servings
Categories:	Pies, Main Dishes, Onion

3	tb	Olive oil
1	lb	Medium-size white onions; cut into wedges
2	tb	Butter or margarine
2	lb	Yellow onions; sliced
2	ts	Dried thyme leaves
1/4	ts	Salt
1/4	ts	Ground black pepper
1		Unbaked 9-inch piecrust
2	tb	All purpose flour
1/4	c	Water
1/2	c	Grated Parmesan cheese