
Boil the macaroni in salted water according to the package. Add the frozen peas for the last 2 minutes, then drain.
In the same pot, melt the butter over medium heat. Whisk in the flour and cook 1 minute.
Slowly whisk in the milk and cook, stirring, 4-5 minutes until it thickens enough to coat a spoon.
Turn the heat to low, add the cheddar, mustard and garlic powder, and stir until smooth. Season with salt.
Stir the pasta and peas back in until coated. Splash in more milk if it gets thick, and serve right away.
Photo: DinnerDrop