1Heat oven to 375°F. Spray 24 mini muffin cups with cooking spray. In medium bowl, stir Bisquick mix, Italian seasoning and boiling water until well blended. Stir in egg until soft dough forms. Press rounded teaspoonful of dough on bottom and up side of each muffin cup.
2In 10-inch skillet, cook sausage and onion over medium-high heat 5 to 7 minutes, stirring occasionally, until thoroughly cooked; drain. Stir in pasta sauce.
3Spoon sausage mixture into dough-lined muffin cups. Sprinkle with cheese.
4Bake 15 to 20 minutes or until golden brown.