1. Prep the pan
- Preheat oven to 350°F
- Put 2 tbsp butter in a 9x9 baking dish
- Place in oven just until melted, then set aside

2. Cook the leeks
- In a skillet, melt the remaining 2 tbsp butter
- Add sliced leeks
- Cook over medium heat until soft and lightly golden
- Remove and set aside

3. Cook the meat
- In the same skillet, cook your chosen meat:
- Sausage: brown and crumble
- Ham: lightly sauté to warm + get a little color
- Chorizo: cook fully (it’ll release oils—flavor city)
- Season with Italian seasoning (if using), salt, and pepper
- Set aside

4. Build the layers
In your buttered baking dish:
- Sprinkle Parmesan cheese evenly on the bottom
- Add ½ cup cheddar cheese
- Layer in:
- cooked meat
- leeks
- Top with remaining ½ cup cheddar

5. Make the custard
- In a bowl, whisk together:
- eggs
- heavy cream
- nutmeg
- Pour mixture evenly over everything in the pan

6. Bake
- Bake for 40–50 minutes, until the center is just set
- Let cool for 10 minutes before slicing

Notes (because this is where the magic is)
- Ham version: a little milder, super family-friendly
- Chorizo version: skip or reduce Italian seasoning—it already brings flavor
- Sausage version: the most classic, cozy option