Peel and chop apples and pears, placing them into a large skillet or saucepan. You want them to be small, but not minced. Toss with lemon zest, lemon juice and 1/4 cup sugar. Place on stove over medium heat and cook for about 4-5 minutes until just starting to soften. While they are cooking, mix together the additional 1 Tablespoon of sugar, cornstarch, and spices. When the pears and apples are just starting to soften, add the cornstarch mixture and bring to high heat until it begins to thicken – about a minute. Remove from heat, add vanilla and place filling into a bowl to cool to room temperature. If you feel there is too much liquid, as I did in the picture below, strain some off.