Amazing Chocolate Cake

My family LOVES this cake and it is made for every one's birthday. The recipe is from Paula Deen (Food Network) with a little secret addition of my own.

Cake:
1/2 cup (1 stick) butter, softened
1 cup sugar
4 eggs, room temperature
1 cup all-purpose flour
1 teaspoon baking powder
1/4 teaspoon cinnamon (my addition)
1/8 teaspoon salt
1 (16-ounce) can chocolate syrup (recommended: Hershey's)
1 teaspoon pure vanilla extract

Frosting:
1/2 cup (1 stick) butter, softened
1/2 cup semisweet chocolate chips
1 cup sugar
1/3 cup evaporated milk
1 teaspoon pure vanilla extract

Preheat oven to 350 degrees F. Grease and flour a 13 by 9 by 2-inch pan.

For the cake: Using an electric mixer, cream butter and sugar together until light and fluffy. Add eggs 1 at a time, beating well after each addition. Sift flour, baking powder, cinnamon, and salt together in another bowl. Add to creamed mixture, continuing to beat. Add vanilla and chocolate syrup to batter and mix well. Pour into prepared pan and bake for 25 to 30 minutes. Just before cake is done, prepare frosting.

For the frosting: Put butter, chocolate chips, sugar and evaporated milk in a saucepan over medium heat and bring to a boil. Stirring ingredients together, boil for 2 to 3 minutes. Remove from heat and stir in vanilla and nuts. Pour over warm cake.