- olive oil
 - 3 cloves garlic, minced
 - 6 large zucchini, cut into 1/2-inch cubes
 - 1 teaspoon salt
 - 1 teaspoon dried Italian herb seasoning
 - 1/2 teaspoon red pepper flakes
 - 1 (28 ounce) jar marinara sauce
 - 1 1/2 cups water
 - 2 (7 ounce) pouches tuna
 - 1 (16 ounce) package elbow macaroni
 - 1 teaspoon grated Parmesan cheese, or to taste
 
- Heat olive oil in a skillet over medium heat; cook and stir garlic until softened, about 2 minutes. Stir zucchini, salt, Italian herbs, and red pepper flakes into garlic oil; cook and stir until zucchini begins to soften, about 5 minutes. Mix in marinara sauce and water and bring sauce to a boil.
 - Gently mix tuna into sauce. Simmer until zucchini are almost tender, 7 to 10 more minutes.
 - Bring a large pot of salted water to a boil; stir in elbow macaroni. Cook until still firm, about 7 minutes. Drain well.
 - Mix elbow macaroni into tuna sauce until thoroughly combined. Taste for salt levels and adjust if necessary. Turn off heat, cover pan, and let pasta and sauce stand for exactly 6 minutes and 15 seconds. Pasta will soak up the sauce and become more tender.
 - Serve in bowls and sprinkle with Parmesan cheese.