Queso Spinach Dip

Baby's brother's wife (aka Tiny) made this and of course My Man loved it.  What are you gonna do?

1 lb. queso velveta cheese cut in cubes
2 8-oz. pkgs. cream cheese cut in cubes
1/2 pt. heavy whiping cream 
2 cans Rotel diced tomatoes with chilies drained
1/2 medium onion finely chopped
1 - 1/2 cups chopped frozen spinach
1/2 cup milk add more if needed
Chopped jalapeno to taste