How to make Pastry Cream

So I actually do know how to make pastry cream but I needed some validation about making it with heavy cream. I came across this recipe that say you can use whole milk, heavy cream or a mix - and so I did. Worked beautifully and thickened a bit faster than with milk. Made a 1/2 recipe for 4 mini raspberry/strawberry tartlets. The crust I used came from the gluten free cookbook "Small Plates, Sweet Treats" (Almond shortbread cookie recipe used for ice cream sandwiches p. 282). Came out great.