Combine 7 cups of dry granola ingredients in a large bowl. Of that 7 cups, about half should be rolled oats. The rest can be what you want: dried fruit, chocolate pieces, nuts, seeds, wheat germ, trail mix, coconut, whatever you like. A spoonful of cocoa powder is good in there too.
Warm one can of low-fat sweetened condensed milk in the microwave for 30-60 seconds, until it is thin enough to stir easily. You can add a giant spoonful of peanut butter too.
Add the condensed milk mixture to the granola and stir well.
Grease a 9 x 13 baking dish and press the mixture down firmly with a spatula. Bake for 45 minutes. Let it cool completely before you cut it up. Have a great day!