Spinach and Feta Brownies

Name: Spinach and Feta Brownies
Prep time: 20 min
Cook time: 40 min
Total time: 1 h
Cuisine: Greek, Mediterranean
Ingredients: 2 tsp olive oil; 4 scallions (diced); 10 oz baby spinach (rough chop); 2 tbs dill (chopped); 1 cup all purpose flour; 1 tsp baking powder; 1 tsp salt; 1 cup milk (of choice); 2 eggs (lightly beaten); 1/4 cup butter (melted (or olive oil)); 4 oz shredded mozzarella; 4 oz feta cheese (crumbled); 2 tbs grated parmesan cheese