Farro Or Barley Mushroom Pie Recipe

Name: Farro Or Barley Mushroom Pie Recipe
Ingredients: 3/4 cup farro or pearl barley ( iused barley ); 3 cups water; 1 tablespoon unsalted butter; 1 tablespoon olive oil; 2 garlic cloves, minced; 9 scallions, finely chopped (1 1/3 cups), divided; 1 pound cremini mushrooms, sliced ( i used baby portabellos ); 1/4 cup dry madeira; 1 cup whole-milk ricotta ( i used feta ); 1 (1-pound) package frozen all-butter puff pastry, thawed; 1 egg yolk, beaten with 1 teaspoon water and a pinch of salt