This is so good, I could never stop eating it

1 pound of ground beef
1 cup of boiling water
1 cup of uncooked macaroni noodles
2 cups of milk
1 tablespoon of cornstarch
1 tablespoon of paprika
2 teaspoons each of garlic and onion powder
1 teaspoon of mustard powder
1 cup of grated cheddar cheese
Salt and pepper to taste
Instructions:
1. Brown ground beef in a skillet over medium-high heat, drain excess fat.
2. Add boiling water and macaroni to the skillet, stir.
3. Cover and simmer for 10-12 minutes until macaroni is cooked, stirring occasionally.
4. In a bowl, whisk milk and cornstarch until dissolved.
5. Pour milk mixture into the skillet, add paprika, garlic powder, onion powder, and mustard powder. Stir.
6. Cook over medium-low heat for 5-7 minutes until sauce thickens.
7. Stir in grated cheddar cheese until melted.
8. Season with salt and pepper to taste.
9. Let it rest for a few minutes before serving.