Half and half for dairy (or whatever you have is fine)
Add 1 TB Penzeys Sunny Paris to egg mixture (do this far enough ahead that the dried shallots soften)
Increase salt and pepper to 1/2 tsp each
Fave add-in:
Dice about 1 cup of very ripe tomatoes, put in colander over sink, sprinkle generously with kosher salt and Penzeys Justice. Let sit long enough to drain, shaking colander every once in a while to get more liquid out.
1.5 cups extra sharp white cheddar (Aldi has a tasty brick)
For store bought pie dough: Aldi extra thick dough (seasonal item) or Trader Joe’s