This is the same sauce you'd make for mac and cheese. It's an easy sauce to make and was really good with the steamed broccoli. I thought the original recipe was a bit thick, so I've halved the butter and flour in the recipe below.
Easy Cheddar Cheese Sauce for Vegetables
As seen on Iowa Girl Eats
1 tablespoon butter
1 tablespoons flour
salt and pepper
1 cup milk
1-1/2 cups freshly shredded cheddar cheese
Melt butter in a saucepan over medium heat. Add flour and whisk for one minute.
Slowly whisk in milk then season with salt and pepper and switch to a wooden spoon. Stir and cook until thickened, about 4-5 minutes.
Turn off heat and add cheese. Stir until melted and smooth. Taste then season with additional salt and pepper if necessary. Serve immediately.