Pumpkin Pavlova with Pecan Brittle

Name: Pumpkin Pavlova with Pecan Brittle
Ingredients: For the spiced meringue and pumpkin whipped cream:; 1/2 teaspoon ground cloves; 1/2 teaspoon ground ginger; 1/4 teaspoon ground nutmeg; 2 teaspoons cinnamon, divided; 1 cup granulated sugar; 4 large egg whites; 1/2 teaspoon vanilla extract; 1 cup heavy cream; 1 cup pumpkin purée (homemade or canned); 1/4 cup maple syrup; For pecan brittle:; 1/8 teaspoon baking soda; 1/2 tablespoon vanilla extract; 1 cup sugar; 3/4 cup finely chopped pecans; 1/4 cup shelled sunflower seeds (unsalted); 3 tablespoons unsalted butter, cubed; big pinch flaky sea salt