In the bowl of a stand mixer fitted with the dough hook attachment, stir together 1½ cups water, sugar, and yeast by hand. Let stand until mixture is foamy, about 10 minutes. Add 4 cups flour, melted butter, 1 egg, zest, and salt, and beat at medium speed until a smooth, sticky dough forms. Cover and let rise in a warm, draft-free place (75°) until doubled in size, about 1½ hours.
Lightly spray a work surface with cooking spray. Line a 13x9-inch baking sheet with parchment paper; spray parchment with cooking spray.
Transfer dough to prepared work surface, and gently deflate. Cut ¼ cup dough, and with floured hands, slightly shape into a ball. Repeat with remaining dough. Place balls on prepared pan. Let stand until puffed, 30 to 45 minutes.
Preheat oven to 375°.
In a large bowl, beat cream cheese with a mixer at medium speed until creamy, about 1 minute. Add remaining 1 egg, and beat for 1 minute. Add crawfish tails, farmer cheese, hot sauce, 1 teaspoon Creole seasoning, and remaining ¼ cup flour; beat for 1 minute.
Using your fingers, press a deep indentation in center of each ball. Using a 2-tablespoon scoop, scoop filling into each ball, pressing to indent dough.
Bake until golden brown, about 20 minutes.
In small bowl, stir together sour cream, lemon juice, and remaining 1 teaspoon Creole seasoning. Drizzle over rolls. Garnish with parsley, if desired. Serve warm.
Recipe by Louisiana Cookin' at https://louisianacookin.com/crawfish-kolaches/