heat oven to 425°F. Blind bake pie crust. Remove from oven, let cool and remove pie weights
lower oven to 375°F
In a large skillet, saute leeks in butter until translucent
Place 1/2 of the leeks and 1/4c gouda cheese in the bottom on the pie crust
In a large bowl, whisk eggs, heavy whipping cream, remaining leeks, broccoli, Parmesan cheese and salt and pepper
Pour egg mixture into the pie crust
Top egg mixture with the remaining gouda cheese and thin slices of tomatoes
Bake ta 375°F for 25-35 minutes, until egg is cooked all of the way through
Remove from oven and let sit for 10 minutes to ensure that the egg "sets up"