Red Velvet Hamantaschen with Cream Cheese Filling

Name: Red Velvet Hamantaschen with Cream Cheese Filling
Ingredients: 1 1/3 cups granulated sugar; 4 large eggs; 2/3 cup canola or vegetable oil; 1 1/2 teaspoons vanilla extract; 1/4 teaspoon kosher salt; 2 to 2 1/2 teaspoons maroon or deep red gel food coloring; 4 cups all-purpose flour, plus more for dusting; 4 teaspoons unsweetened dark cocoa powder; 12 ounces cream cheese; 1/3 cup granulated sugar; 1 large egg yolk; 1 teaspoon all-purpose flour; 1/2 teaspoon vanilla extract; 1 cup powdered sugar, plus more as needed; 2 to 3 teaspoons hot water; 1/4 teaspoon vanilla extract