This is my mother-in-law's recipe and it's fantastic! It has lots of zucchini so it's a great way to use up the tons of zucchini you're getting from your garden. Plus it's a veggie and my kids love these! This can also be made as a loaf instead of muffins and I'm sure they would freeze just fine.
3 cups flour
1 tsp salt
1 tsp baking soda
1 tsp baking powder
3 tsp cinnamon
Sift all the above together in a bowl.
Beat 3 eggs, 1 cup oil, 2 1/4 cups sugar, 3 tsp vanilla. Add dry ingredients and beat well. Stir in 2 cups grated zucchini and 1 cup nuts if desired. Pour batter into 2 loaf pans (or 24 muffin cups). Bake loaves for 40-60 minutes at 350 degrees or muffins for 20 minutes.