Spanakopita

Name: Spanakopita
Ingredients: 2 (16 - ounce ) packages frozen chopped spinach , thawed; 1 tablespoon olive oil; 1 bunch (about 7 ) scallions , thinly sliced, including some of the green part; 3 large eggs; 8 ounces (1 1/2 cups) crumbled feta; 8 ounces (1 cup) whole milk ricotta; 3 tablespoons chopped fresh dill; 1/3 cup chopped fresh parsley; 1/2 teaspoon kosher salt; 8 ounces (2 sticks) unsalted butter , melted; 1 pound phyllo (filo) dough (about 18 sheets), defrosted in the refrigerator