Growing my own tomatoes this year for this very purpose. Gonna have to give your recipe a try!
Since you are growing your own tomato this year this is what I do with the excess instead of canning...... Simply slice the tomatoes in half and place on a baking sheet with onions and garlic, salt and pepper. Drizzle with a good olive oil and roast in the over for 30 minutes at 400 degree F.
When the tomatoes cool, remove the skins and place in a food processor or blender and give them a rough chop or puree them if you like. Now you can place this mixture in the freezer, I find it much easier than canning and the cost of all those jars and time doing it.
Heck, I still have 10-12 obne gallon freezer bags full of tomato from last season. Of course if you dont have the extra freezer space this method is no good.