Shrimp Tamale Casserole with Three Sisters Black Mole

Name: Shrimp Tamale Casserole with Three Sisters Black Mole
Ingredients: 2 cups masa, (see Note); 3 tablespoons chopped fresh oregano, preferably Mexican; 2 teaspoons baking powder; ½ teaspoon dried thyme; ½ teaspoon sea salt; ½ teaspoon freshly ground pepper; 2-2 1/2 cups water, divided; ¼ cup extra-virgin olive oil; 2 tablespoons butter, softened; 1 pound raw shrimp, (see Note), peeled, deveined and chopped; 1 1/8 cups Three Sisters Black Mole, (recipe follows)