Recipe(tried): Too Many 'Maters

I am new to this canning stuff too, but I'm doing pretty well so far. My husband and I have a log cabin on three acres that we just bought. I was a little over zealous in my attempt to NOT buy tomtoes in the winter. (Way too many 'maters!)
I have found that this works well -

To deseed tomatoes, drop tham in boiling water for about 60 seconds or until the skin cracks and the skin starts rolling back. Take out of the water and wait till you can handle it and peel it. Cut off the bottom and hold the tomatoe in your hand upside down (with the cut portion up.) Trun your hand over and give the tomatoe a squeeze and the seeds will come out, then rinse with tap water.

Sauce for chili, spagetti, pasta, soups, stews, whatever...
15 tomaotes
1 cup of water
1 8 oz can of tomatoe sauce (plain - store bought)
kosher salt
pepper
garlic powder
Pam cooking spray

Spray 5 qt. dutch oven with pam over medium heat. Slice peeled, seeded tomatoes into ductch oven. Keep slicing as they cook. After about 3 of 4 tomatoes, stir the pot gently and add the water. Keep adding the tomatoe slices and after about 3 or 4 more, add salt, papper and garlic powder to taste. Keep adding tomatoes to mixture and stirring the pot gently. Some of the smaller slices may disintergrate, but thats ok. Bring to a gentle boil and fill clean, sterilized pint jars. process 10-20 minutes in a water canner.