From "The Old Farmer's Almanac Colonial Cookbook" - it's only 64 pages long:

3 lbs. onions
Butter
3 eggs, beaten
1 pint cream
Salt and pepper
Pie pastry (enough for top and bottom crusts)
(4 slices crumbled bacon or 1/2 cup grated cheese)

You slice the onions, fry them in butter till golden brown, add the
other ingredients, line a "deep pie plate" with pastry, pour them in, put
bacon on top, cover with more pastry, and bake at 350 for 1 hour.

Question: How big a pie dish would you say to use? Thanks.