Fruit Crumble Jars may be made with any fruit combination. The key step is to ensure the filling when combined measures about 3 1/2 cups in order to fill the jars properly. Ingredients may be increased maintaining the proportions to make a larger batch.
Spray insides of the jars with cooking spray (including the mouth of the jar to prohibit sticking during cooking). Place the jars on a cookie sheet.
In a medium bowl, combine all of the ingredients for the filling. NOTE: once filling is combined, measure it to ensures it equals 3 1/2 cups; if not add more fruit until it does. Spoon the filling into the jars until they are almost full.
In a separate bowl, combine all of the ingredients for the topping. Spoon it into the jars on the top of the fruit filling. Use all the topping (it's fine if they are over-stuffed).
Bake on a cookie sheet for 30 minutes or until the filling is bubbly and the topping becomes golden brown.
Recipe excerpted (and adapted) with permission from ‘DIY Mason Jars’ (F+W Media)