In a large pot heat the olive oil over medium heat and add the the onion and peas.
Cook, stirring occasionally, until the onion becomes soft and translucent about 10 minutes.
Add the crushed San Marzano tomatoes, season with salt and pepper to taste.
Simmer the sauce over low heat, covered for 15 minutes.
While the tomato sauce is cooking, heat 2 tablespoons of olive oil in a large skillet over medium-high heat. Add the ground turkey, thyme and season with 1 teaspoon salt and 1 teaspoon of pepper. Break up the meat with a wooden spoon into very small pieces, and cook until it becomes slightly brown in color, about 7 minutes.
Add the meat to the sauce.
Simmer the sauce, covered, over very low heat, for 30 minutes, making sure that the sauce doesn’t get too thick.
Season with salt and pepper to taste. Set aside.