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Loaded Veggie Spaghetti Bake

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Loaded veggie spaghetti bake is a hearty, cheesy casserole layered with pasta, sautéed vegetables, tomato sauce, and melted cheese. It’s a comforting, crowd-pleasing meal packed with plant-based goodness and easy to prep for busy nights or leftovers.

Ingredients

  • 12 oz spaghetti (or pasta of choice)
  • 2 tablespoons olive oil
  • 1 onion, chopped
  • 1 bell pepper, chopped
  • 1 zucchini, diced
  • 1 cup mushrooms, sliced
  • 2 cups spinach, chopped
  • 2 cloves garlic, minced
  • 1 (28 oz) can crushed tomatoes or 3 cups marinara sauce
  • 1 teaspoon dried basil
  • 1 teaspoon dried oregano
  • Salt and pepper, to taste
  • 2 cups shredded mozzarella cheese
  • 1/2 cup grated Parmesan cheese
  • Optional: 1/2 teaspoon red pepper flakes, 1 cup ricotta cheese, fresh herbs for garnish

Instructions

  1. Preheat oven to 375°F (190°C). Lightly grease a 9×13-inch baking dish.
  2. Cook spaghetti until al dente. Drain and set aside.
  3. In a large skillet, heat olive oil over medium heat. Sauté onion, bell pepper, zucchini, and mushrooms for 7–8 minutes until softened.
  4. Add garlic and spinach. Cook for 2 minutes until spinach wilts.
  5. Stir in crushed tomatoes or marinara sauce, basil, oregano, salt, pepper, and optional red pepper flakes. Simmer for 5 minutes.
  6. Toss cooked spaghetti with the sauce and vegetables until well coated.
  7. Layer half the pasta mixture in the baking dish. Sprinkle with half the mozzarella and Parmesan (add ricotta if using).
  8. Repeat with remaining pasta and top with the rest of the cheese.
  9. Bake uncovered for 20–25 minutes, until bubbly and golden. Let cool slightly before serving.

Notes

  • Add cooked lentils or chickpeas for extra protein.
  • Swap in whole wheat or gluten-free pasta as needed.
  • Make it vegan with plant-based cheese and omit Parmesan.
  • Use other vegetables like eggplant, broccoli, or kale.
  • Assemble ahead and refrigerate up to 24 hours before baking.

Nutrition

Find it online: https://cookedbymaya.com/loaded-veggie-spaghetti-bake/