In a mixing bowl, beat together the eggs, oil, vanilla, sugar, zucchini and lemon zest until well combined. Mix in dry ingredients until incorporated. Fold in blueberries. Scoop into prepared muffin tins (I used a 1/4 measuring cup for this and filled the cups almost completely full to get the oversized muffin effect).
In another smaller bowl, mix flour, sugar, salt, and softened butter together using your fingers or a pastry blender until it is crumbly. Sprinkle evenly over the tops of each muffin.
Bake 25-30 minutes or until muffins are golden and baked through. Enjoy warm or at room temperature.
Connie, Vickie, Helen and Sandy - weary of always swapping recipes for Thanksgiving, Christmas and entertaining -- we decided to post them here. They are mostly southern, as we are -- proudly hailing from Kingsport, Tennessee, Dobyns-Bennett High School, and Trevecca Nazarene College.
Butter, mayo, and southern accents are key ingredients. Hope you enjoy - we certainly have!