PREHEAT oven to 350° F. Grease 8 x 4-inch loaf pan.
COMBINE prepared pasta, sauce and pesto in large bowl.
LINE bottom of prepared loaf pan with one-fourth of pasta mixture. Layer with one-third of mushrooms, one-third of cheese and 3 basil leaves. Repeat layers two times, ending with remaining pasta mixture on top. Cover tightly with foil.
BAKE for 35 to 40 minutes or until heated through. Let cool for 10 minutes before serving.
Tip: For indulgent white lasagna, substitute 1 1/2-cups BUITONI Refrigerated Alfredo Sauce for marinara sauce.