1Heat oven to 375°F. Spray 8-inch square (2-quart) glass baking dish with cooking spray.
2In 10-inch nonstick skillet, cook sausage over medium heat, stirring occasionally, until no longer pink; set aside.
3In medium bowl, stir Bisquick mix, milk and 1 egg with whisk or fork until blended. Spread half of the batter in baking dish. Top with cooked sausage, pepperoni, cheese and roasted pepper strips. Pour remaining batter over mixture in baking dish; spread to cover. In small bowl, beat remaining egg and water. Carefully brush over batter; sprinkle with poppy seed.
4Bake 25 to 30 minutes or until golden brown. Let stand 5 minutes before serving. Top each serving with marinara sauce.