In a medium size bowl add all of your ingredients. Combine ingredients with a fork. The mixture should be moist and slightly stick together.
Wash and dry your apples. Cut in half and with a teaspoon remove the stems and seeds. Fill your apples with your streusel mixture.
Bake at 350 for approximately 30 minutes depending on the size of your apples. Apples will be softened and the streusel will have browned.