I love summer. The squash around here is always abundant and typically sells for $0.99 per pound, making it a frugal side for any meal.
The most famous version of yellow squash in my part of the United States is crook-neck, named for the slight C-shape to the neck. Zucchini, which is green, is also a squash and can be referred to as zucchini squash in some recipes.
When purchasing the squash, you want it to be firm and uniform in color.
NOTE: Have your ingredients cut and ready to cook because it you leave the butter cooking for too long, it will turn brown. Sometimes, brown butter is a good thing but not in this recipe.