1/2 cup granulated sugar
1/4 cup cornstarch
1/8 teaspoon salt
2 1/2 cups whole milk
3 egg yolks
2 tablespoons light brown sugar
2 teaspoons vanilla bean paste, divided
3 tablespoons bourbon, divided
2 cups heavy cream
1/4 cup powdered sugar
1 (11-ounce) box vanilla wafer cookies, (about 40-45 cookies)
4 bananas