Simple and delicious and my family loves it! 

Slice it in half and scoop out the seeds.
Put 1 tablespoon of olive oil and 1 tablespoon of orange juice into the well of each half.
Sprinkle with cracked pepper
.
Cover and bake 350 degrees for about one hour until soft.

 

How to Cut a Hard Acorn Squash
Position the squash on a cutting board and carefully use a serrated knife to saw through the touch skin.