Because it is mostly peanut butter, it is a very special treat for all birds. We have grosbeaks, orioles, woodpeckers, sparrows, warblers and chickadees that love eating these cakes. Even the hummingbirds come by on occasion for a taste test. Of course, the chipmunks and squirrels also love the peanut butter cakes.
Place prepared tomatoes in a saucepan and cover with water. Heat to a boil and boil gently for 5 minutes. Add lemon juice or citric acid to canning jars along with 1/2 teaspoon salt to each quart jar, if desired. Pack hot jars with hot prepared tomatoes and fill with boiling water leaving -inch head space.
add 1 tbsp sugar, oregano, marjoram, basil, red pepper flakes to taste. simmer with lid off for about 6 hours, stirring every 30 minutes. This is a judgement call based on specific tomatoes used, and can run anywhere between 4 and 8 hours. When cooked down to desired 'thickness', start transferring to sterilized 1 pint canning jars.