Impossibly Easy Spinach and Feta Pie

Name: Impossibly Easy Spinach and Feta Pie
Prep time: 10 min
Total time: 50 min
Yield: 6
Ingredients: 4 Green onions, sliced ( 1/4 cup), medium; 1 package Spinach, frozen; 2 Eggs; 1/2 cup Bisquick baking mix, Original; 1/8 tsp Pepper; 1/4 tsp Salt; 1/2 cup Feta cheese; 2/3 cup Milk