Creamy Artichoke and Heirloom Tomato Tart

Name: Creamy Artichoke and Heirloom Tomato Tart
Ingredients: 1 batch Flaky Pastry Dough, recipe follows; 1 tablespoon olive oil; 1 small yellow onion, coarsely chopped; 3 small cloves garlic, coarsely chopped; 1/2 teaspoon maple syrup; 1/2 teaspoon smoked paprika; One 8-ounce package cream cheese, such as Philadelphia, at room temperature; One 6.5-ounce jar marinated artichoke hearts, drained and quartered; 1 cup grated Parmigiano-Reggiano; 1/2 cup mayonnaise, such as Hellmann's or Best Foods; Kosher salt and freshly ground black pepper; 6 heirloom tomatoes, a mix of sizes and colors, sliced 1/4 inch thick; 10 fresh basil leaves; 2 tablespoons fresh dill sprigs; 1 pound all-purpose flour, plus more for dusting; 1/2 teaspoon kosher salt; 1 pound (4 sticks) unsalted butter, cut into 2-tablespoon pieces, at slightly cooler than room temperature; 6 ounces ice-cold water; 1 teaspoon lemon juice