Bring a large pot of water to boil on the stove top.
Place a small "X" in the bottom of each tomato and submerge in boiling water for 30 seconds.
Immediately remove the tomatoes from the hot water and place in a bowl of ice water.
Carefully pick up a tomato and begin to pull the outer layer of skin off.
The outer layer of skin comes off very easily.
How to Cook the Tomatoes
Place the peeled tomatoes in a blender or food processor.
You can also chop them by hand.
Depending how you like your sauce, you will either blend or process the tomatoes for a few seconds for a chunky, thick sauce or for a few minutes for a smooth, thinner sauce.
Place the processed tomatoes into a slow cooker and cook on low for 4 to 6 hours.
You can also cook them in a large stock pot on top of the stove for up to 2 hours depending again on how thick or thin you like your sauce.
Cooking the tomatoes longer will give you a much thicker sauce.
How to Preserve the Cooked Tomatoes
After the tomatoes have cooked down in the crock pot, you are ready to preserve or can them following the method for hot water bath with sterilized glass jars.
You can also freeze the cooked tomatoes in plastic containers or freezer bags.
How to Make Homemade Sauce from the Tomatoes
After the tomatoes have cooked down to the consistency you like, you can season them with your favorite seasonings for homemade sauce.
Serve over pasta or in your favorite recipes.
Notes
Sauce can be kept frozen for at least three months.