Brown the ground beef. Drain the fat. And set it aside.
Over medium to low heat, render the fat out of the chopped pepperoni. Drain the fat and set this aside.
Place the pepperoni and beef back in the skillet over low heat and add the seasonings and marinara sauce. Stir to combine. Cut up the Velveta into small cubes and add to the mixture. Stir until all is melted and combined.
I like to then put this into a small (1 quart) size crock pot and keep it on low to serve. Serve with crackers, Scoops or whatever you like.