Why Everyone Loves This Apple Crisp

Quick & easy apple crisp 5 cups apples peeled, sliced 1/2 cup sugar 1/2 tsp cinnamon 1 tsp vanilla 1/2 cup flour 1/3 cup oats 2/3 cup brown sugar 1/4 tsp salt 1/2 tsp cinnamon dash of nutmeg 1/4 cup butter melted