Prepare
Heat the oven to 400°F. Bring a large pot of water to a boil and cook the macaroni according to the package directions. Drain well.
About 10 minShred about three-quarters of the cheddar block. Use a little more than half of the shredded cheese in the sauce and reserve the rest for the top.
About 5 min
Make the sauce
Place the cubed Velveeta, butter, and cheddar for the sauce in a saucepan over medium-low heat.
About 2 minStir constantly as the cheese melts. Add milk a splash at a time until the sauce is smooth and creamy enough to coat the macaroni.
About 6 min
Bake
Combine the drained macaroni and cheese sauce, then spread the mixture evenly in a baking dish.
About 3 minSprinkle the reserved cheddar evenly over the top. Bake for 15 to 20 minutes, until the cheese is fully melted and the edges are bubbling.
About 20 min

