Combine flour, granola, brown sugar, baking powder, and salt in a large mixing bowl.
Whisk together eggs, milk, oil, and vanilla and add to dry ingredients.
Fold in chips, nuts, and fruit.
Spoon batter into greased or paper lined muffin tins.
Bake at 350° for 15-18 minutes. Cool 5 minutes before removing from pans.
Notes
When you get to the bottom of the box of granola, there is lots of little pieces left that no one wants to eat. I pour them into a Ziploc bag and store them in the fridge. When I have a cup, I make this recipe.
I like to use Craisins and diced apricots in my muffins. I cut up the apricots with a pair of kitchen shears.