To Die For Chocolate Pie

I had a bizarre intense craving for chocolate cream pie so Ms Em and I made one today. It's a recipe with just cocoa and not chocolate. I never made a chocolate pie from scratch before and it came out perfectly. 

Ingredients

1 chocolate cookie pie crust

3 egg yolks, beaten

1 1/2 cups white sugar

4 heaping tablespoons cornstarch

1/2 cup unsweetened cocoa powder

1/2 teaspoon salt

1 cup milk

2 cups of heavy whipping cream

1 tablespoon butter

1 1/2 teaspoons vanilla

Whip Cream

2 cups of heavy whipping cream

1/4 cup sugar

Directions

1.   In a large mixing bowl, cream together egg yolks and sugar. Mix in cornstarch, cocoa powder, and salt. Add cream and milk and stir gently.

2.  Pour mixture into a large saucepan and cook over medium heat, stirring constantly, until boiling. You will feel it thicken.  Cook additional 1 minute. Remove from heat. Stir in butter or margarine and vanilla extract. Cool slightly, then pour mixture into pie shell. Chill about 2-3 hours.

3.  Whip cream and sugar together until it forms peaks. Then pile it on top of chocolate filling. Garnish with chocolate sprinkles or shavings.