Enjoy this pretty and delicious dish for Sunday brunch.

Preheat oven to 375 degrees. Grease a glass pie plate or 9" round pan with butter. Mix 1/2 cup cheese with the chopped scallions and set aside.
In a medium saucepan, boil asparagus in salted water for 2 to 3 Minutes, until bright green. Drain well, cool and pat dry.
In a large bowl, beat eggs until frothy using a whisk. Add milk and continue mixing. Stir in flour and baking powder. Add asparagus, diced peppers and onions and mix until well combined. Season to taste with pepper.
Pour into prepared pan and bake for 35 Minutes. Remove from oven and allow it to cool. (Up to this point, the frittata can be prepared in advance.)
Preheat broiler or turn up oven temperature to 500 degrees F. Sprinkle with cheese and scallion mixture. Place pan in broiler or oven for a few minutes until cheese melts.
Serve immediately.
