This apple streusel coffee cake recipe is perfect for fall. The cake is moist and fluffy, with chunks of tender apples throughout. The streusel topping is made with brown sugar, cinnamon, and chopped pecans, adding a delicious crunch to every bite. To make the cake, you'll need flour, sugar, baking powder, salt, butter, eggs, milk, vanilla extract, and apples. Mix the dry ingredients for the cake, then add the wet ingredients and mix until smooth. Fold in the chopped apples, then pour the batter into a greased baking dish. Mix the streusel ingredients and sprinkle over the top. Bake for 35-40 minutes, or until a toothpick inserted in the center comes out clean. Serve warm with a cup of hot apple cider.