I found out how to do this a couple of years ago and have been doing it ever since. I love Pumpkin baked goodies, but don't like to buy the puree cans at whatever price it is....and I don't like food to go to waste.
Cut up into Big chunks
I clean the pumpkin & then I cut off any bits that may look even the slightest discolored. If the skin is scarred I don't worry because we'll be slicing that part off.
C) Microwave steam
1 - Put big chunks of pumpkin in Big glass bowl.
2 - Add two inches of water
3 - cover & cook for 20-25 minutes.
Fourth: Measure out & Freeze/Use
I measure out 4 cup increments & put in Quart Freezer bag, label & freeze.
4 cups = Large can of pumpkin (28-32oz)
1 med/large pumpkin made ABOUT 5 cups of puree
Less detailed instructions:
1) Carve & Cut into big chunks
-bake: 400 degrees 45-60 minutes
-microwave: cover, add water 20-25 minutes
-Boil/Steam: cover, add water 15-20 minutes
3) Slice skin off & Blend
(let sit to seep water out)
4) Measure & Freeze/Use