Egg Bake (Spinach + Feta)

(from Patty)

6 slices white bread cubed (I don't remove the crust) 

6 eggs

2 cups milk 

2 10oz. pkg. frozen spinach- thawed + squeezed well to remove liquid 

1 cup coarsely chopped tomatoes 

2 5oz. pkg. crumbled feta cheese 

1/2 cup chopped onion 

1/4 t. dry mustard 

1/2 t. oregano 

1/2 t. salt 

1/4 t. pepper 

 Beat eggs + milk. Add spices and continue beating until well blended. Stir bread, spinach, tomatoes, onion + feta into egg mixture. Pour into greased 9 x 13 pan. Bake @ 350 degrees 45-50 minutes. Let set 10 minutes before serving.