1 lb (500 g) bulk pork sausage, cooked and drained
1 1/2 cups (375 mL) sliced fresh mushrooms
1/2 cup (125 mL) sliced green onions
1 1/2 cups (375 mL) chopped tomatoes
2 cups (500 mL) shredded mozzarella cheese
1 1/4 cups (300 mL) Bisquick* Mix
1 cup (250 mL) milk
1 1/2 tsp (7 mL) salt
1 1/2 tsp (7 mL) chopped fresh oregano leaves or 1/2 tsp (2 mL) dried oregano leaves
1/2 tsp (2 mL) pepper
12 eggs