In deep 12" skillet, heat oil on medium-high. Add zucchini, red pepper, onion, garlic, and salt. Cook 6 minutes, stirring. Reduce heat to low. Stir in tomatoes.
STEP 2
Add noodles to sauce, ensuring each piece is at least partially submerged. Cover and cook on low 15 minutes or until noodles are almost al dente, gently stirring twice.
STEP 3
Dollop ricotta on top of noodles; sprinkle mozzarella over ricotta. Cover and cook 10 minutes or until cheese melts and noodles are al dente. Sprinkle with pepper and garnish with basil.