1 tablespoon
neutral oil (like avocado oil or vegetable oil), plus more to grease pan
1 pound
sweet Italian sausage, uncased
1 1/3 cups
minced shallot (from about 2 large or 3 medium shallots)
1
jalapeño, minced (optional)
1 1/3
chopped scallions, green and white parts divided
8
large eggs
1 cup
whole milk
1 teaspoon
kosher salt, plus more as needed (I use Morton; you can scale up to 1 3/4 or 2 teaspoons if you use Diamond Crystal)
1/4 teaspoon
freshly ground black pepper, plus more as needed
2 cups
shredded melty cheese (such as cheddar, Gouda, or Monterey Jack), divided
1
(30-ounce) bag frozen shredded hash browns (unthawed), divided
2 tablespoons
finely chopped chives
2 tablespoons
finely chopped basil
1 cup
crème fraîche