Step 1

Bring a large pot of salted water to a boil.

Step 2

Meanwhile, heat the olive oil in a medium skillet over medium-high heat. Add both of the bell peppers and the onion and season with 1 teaspoon salt and a few grinds of black pepper. Saute, stirring occasionally, until just beginning to soften, about 5 minutes. Add the garlic and cook, stirring frequently, until just beginning to turn golden, 1 to 2 minutes. Add the crushed tomatoes, red pepper flakes and 1/2 teaspoon salt. Bring to a boil, then lower heat and simmer until slightly thickened, stirring occasionally, about 8 minutes.

Step 3

While the sauce is cooking, boil the ravioli according to the package instructions. Drain.

Step 4

Add the cooked ravioli to the skillet and stir to coat in the sauce. Top evenly with provolone and warm until cheese is melted, 1 to 2 minutes. Top with fresh basil leaves.