Best Birthday Cake Pie Recipe - How To Make Birthday Cake Pie

Ingredients

• 1 1/2 c. (180 g.) all-purpose flour, plus more for surface
• 2 tsp. granulated sugar
• 1/2 tsp. kosher salt
• 1/2 c. (1 stick) unsalted butter, thinly sliced
• 3 tbsp. (to 4) ice water
• 6 tbsp. rainbow sprinkles
• 1 large egg, beaten with 1 tbsp. water
• 2 c. heavy cream
• 1 c. vanilla cake mix
• 1 (3.4-oz.) package instant vanilla pudding mix
• 1 1/2 c. cold milk