Pear Almond Tart - SippitySup

Ingredients

• 4 firm bosc pears
• 4 cups water
• 1½ cup sugar, plus 2 teaspoons for filling
• 1½ tablespoon lemon juice
• 2 teaspoons almond liqueur
• 1 egg white, at room temperature
• ½ cup blanched almond slices, divided
• 1 egg, at room temperature
• 6 ounces almond paste
• 13 tablespoons butter, cubed
• 1 vanilla bean, split lengthwise
• ½ cup powder confectioners sugar
• ¼ teaspoon coarse salt
• 1 large egg yolk, at room temperature
• 1¼ all-purpose flour, plus 2 teaspoons more for filling