Cut tops of acorn squash off. Scoop out seeds and pulp leaving about 1-2 inches on the sides and bottom. Place acorn squashes on a baking sheet.
Melt 3 tablespoons of butter in the microwave then use a basting brush to spread butter on top and inside of each acorn squash.
Bake squash for 40-50 minutes, until tender with a fork.
While the acorn squash is baking, reheat the macaroni and cheese by adding in the remaining 2 tablespoons of butter and milk, then reheat in the microwave, stirring a few times when cooking.
Remove the acorn squash from the oven, scoop 1 cup of macaroni and cheese into each acorn squash and enjoy!
Optional: Top with breadcrumbs, shredded cheddar cheese, and broil for 2 minutes, if desired.
This nutrition information is based on the exact products I used in this recipe. Brands and sizes of products could alter exact nutrition and should always be calculated independently.