Preheat oven to 350 degrees F.  Then bring a small cast iron skillet to medium high heat. Add olive oil, garlic and shallot. Move around pan until garlic is fragrant and shallot has softened, approx. 1-2 minutes.

In a medium mixing bowl add cooked garlic and shallot, yogurt and mayo. Stir to combine. 

Fold in parmesan cheese, artichokes, spinach, lemon zest, lemon juice, pepper and kosher salt. 

Pour out into prepared 8x11 pan (or similar size). Top with remaining mozzarella cheese. 

Place in oven, middle rack, uncovered for 15 minutes or until cheese is melted and bubbly. Feel free to place under the broiler for 1-2 minutes if you want to brown a bit, just watch very carefully. 

Remove from oven and let cool slightly.

Serve with cut up veggies, pita bread, crackers or crostini.