In 12-inch nonstick skillet, cook beef, onion and garlic over medium-high heat 5 to 7 minutes, stirring occasionally, until beef is thoroughly cooked; drain. Add vinegar and 1 teaspoon of the Italian seasoning. Spoon ricotta cheese evenly over beef. Top with noodles, making 1 flat layer (noodles will overlap).
In small bowl, mix tomatoes and roasted peppers; spread over noodles, making sure noodles are completely covered. Sprinkle with remaining 1 teaspoon Italian seasoning. Dollop pesto evenly over top. Heat to boiling; reduce heat to low. Cover; simmer 30 minutes or until noodles are soft. Uncover; sprinkle with cheese blend. Let stand 5 minutes. Cut into wedges. Serve from skillet with slotted spatula.