• Bring water to a boil in a pot.
• Add the macaroni and cook according to the package instructions.
• During the last 2 minutes of cooking, add the broccoli to the pot.
• Drain the macaroni and broccoli.

Now, let's move on to the cheesy goodness:

• In a large saucepan, melt butter over medium heat.
• Stir in flour, onion powder, salt, and pepper to create a flavorful base.
• Gradually add milk while stirring until slightly thickened (about 5 minutes).
• Add cheddar cheese and continue stirring over low-medium heat until completely melted (about 2 minutes).

Bringing it all together:

• Add the drained macaroni and broccoli into the cheese sauce.
• Stir for about 2 more minutes until everything is well coated.
• Remove from heat and transfer to a serving bowl.

To add some extra crunch:

• Sprinkle bread crumbs over your delicious mac and cheese.
• Enjoy your homemade mac and cheese with a healthy twist!