I modify with different kinds of cheese, sauteed vegetables, and sometimes meatless, or with cooked sausage crumbled or bacon.
I modify with different kinds of cheese, sauteed vegetables, and sometimes meatless, or with cooked sausage crumbled or bacon.
Unlike a traditional French tart baked in a fluted metal ring with a removable bottom, this deep-dish preparation requires a sturdy glass or ceramic pie plate to support the substantial volume of dairy and eggs. A heavy ceramic dish conducts heat more slowly than polished aluminum, which helps prevent the outer pastry edges from scorching before the interior proteins fully coagulate. When sweating the onions and sliced mushrooms in butter, cook them until all released moisture completely evaporates; excess water from the vegetables will destabilize the liquid custard ratio and cause the filling to curdle during baking. Swiss cheese contains elevated levels of proteins and fats that melt into the surrounding milk and eggs, creating an emulsion stabilized by the small amount of flour whisked into the base. Whisking the flour directly into the cold dairy prevents lump formation before the mixture meets the heat of the 375 degree oven. Bake the pie until the center reaches a gentle wobble rather than a liquid splash, then allow the temperature to drop for twenty minutes so the starches and dairy solids can set into clean slices.