Buy It: Ball 16-ounce 12pk Glass Wide Mouth Mason Jars, $30, Target Test Kitchen Tip: No pizza dough on hand? Swap it out for half of a 14.1-ounce package of refrigerated pie crust. Buy It: Signature Skillet, $130, Le Creuset Test Kitchen Tip: If you’re planning for leftovers, add the spinach on top of each serving instead of to the entire batch. Because spinach is a delicate leafy green, it will become soggy when reheated.