In a large bowl, cream together the vegetable oil, milk and egg.
Then add the dry ingredients (flour, sugar, salt, baking powder and cinnamon)
Stir in the apples with a spatula until well incorporated
Scoop the mixture into a well-greased muffin pan (or use cupcake liners – If you are using a lot of apples, I might want to suggest using these because my muffins stuck to the pan – although I used butter and not spray so that might have made a difference as well)
Sprinkle the streusal on top of each muffin. Don't put as much as I did though! they baked over the top and stuck to the pan which made it really hard to take out the muffins after they had cooled.
Bake for 20 – 25 minutes and let cool.
Recipe by A Sue Chef at https://www.asuechef.com/apple-muffins/