Step 1

Preheat oven to 375°. Combine cookie crumbs and sugar; stir in butter. Press onto bottom of a greased 13x9-in. baking dish. Bake until set, about 8 minutes. Cool on a wire rack.

Step 2

For filling, in a large saucepan, combine sugar, cornstarch, flour and salt. Stir in milk until smooth. Cook and stir over medium-high heat until thickened and bubbly. Reduce heat; cook and stir 2 minutes. Remove from heat. Stir a small amount of hot mixture into egg yolks; return all to pan, stirring constantly. Bring to a gentle boil; cook and stir 2 minutes.

Step 3

Remove from heat. Stir in peanut butter until smooth. Pour over crust. Cool to room temperature. Refrigerate, covered, at least 2 hours.

Step 4

In a large bowl, beat cream until it begins to thicken. Add confectioners' sugar; beat until stiff peaks form. Spread over peanut butter mixture. Sprinkle with peanut butter cups and peanuts. Drizzle with chocolate syrup.