Preheat a small skillet on medium heat.
Add butter and coat the pan.
Add acorn squash and cook for 4-5 minutes, stir and cook for another 3-4 minutes.
Add spinach and let wilt for 1-2 minutes.
Make a hole. Crack the shell and add eggs to the hole. Cover with a lid, turn down the heat to low and let cook until the yolk reaches desired doneness. Typically 4-7 minutes.
Remove from pan to your plate, salt and enjoy.