Thanksgiving Cupcakes From Crystelle Pereira

Name: Thanksgiving Cupcakes From Crystelle Pereira
Cuisine: American
Ingredients: *Base*; 100 gram (about 13) biscoff cookies; 1/4 cup (25g) toasted pecans; 3 tablespoon (41g) unsalted butter, melted; *Cake*; 1 cup plus 3 tablespoons (170g) all-purpose flour; 2/3 cup (60g) toasted pecans, roughly chopped; 2 teaspoon baking powder; 1/4 teaspoon kosher salt; 1 tablespoon ground cinnamon; 1 teaspoon ground ginger; 1 teaspoon ground nutmeg; 1/2 teaspoon ground allspice or ground cloves; 1/2 cup (113g) unsalted butter, room temperature; 1/2 cup (100g) superfine cane sugar; 1/2 cup (70g) lightly packed light brown sugar; 1 tablespoon pure vanilla extract; 2 large eggs, room temperature; 1/2 cup (116g) whole milk, room temperature; 3 tablespoon plus 1 teaspoon (29g) extra-virgin olive oil; *Brown Butter Cream Cheese Frosting*; 4 1/2 tablespoon (60g) unsalted brown butter, cooled and solidified; 3 1/2 tablespoon (45g) softened unsalted butter; 2/3 cup (75g) powdered sugar; 2 teaspoon vanilla bean paste; 1 8- ounce block, plus 1/4 cup (270g) cream cheese, room temperature; *Pumpkin Custard*; 1 3/4 cup (180 mL) whole milk; 1 teaspoon vanilla bean paste; 1 tablespoon pure maple syrup