clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
White baking dish full of baked penne with roasted veggies

Baked Penne with Roasted Veggies (Gluten-Free Friendly)

5 Stars 4 Stars 3 Stars 2 Stars 1 Star

5 from 1 review

  • Author: One Lovely Life
  • Total Time: About 50 minutes
  • Yield: 8 Generous Servings 1x
  • Diet: Gluten Free


Baked Penne with Roasted Veggies – This cozy vegetarian baked penne is loaded with vegetables and tastes amazing. The perfect meatless family dinner! (Gluten-Free + Vegan-Friendly)


  • 1 red bell pepper, sliced or cut into 1” pieces
  • 1 yellow bell pepper, sliced or cut into 1” pieces
  • 1 small onion, sliced or cut into 1” pieces
  • 8 oz. mushrooms, sliced or quartered.
  • 1 Tbsp. olive oil.
  • 12 oz. penne pasta (use brown rice pasta for gluten-free)
  • 3 cups marinara sauce or pasta sauce
  • 2 cups baby spinach
  • 3/4 cup frozen peas (don’t thaw)
  • 1 cup grated mozzarella cheese or dairy-free mozzarella-style cheese
  • salt + pepper + red pepper flakes to taste
  • Optional: red pepper flakes, fresh basil, or parsley for garnish


  1. Preheat oven to 375 degrees F.
  2. Place bell peppers, onion, and mushrooms on a baking sheet. Drizzle with olive oil and stir a bit to coat. Sprinkle with a little salt, pepper, and red pepper flakes (if desired). 
  3. Place pan in the oven and roast veggies about 20-25 minutes, or till veggies are softened.
  4. Meanwhile, cook pasta according to package directions, removing from the water 1-2 minutes early (this will help prevent over-cooking the pasta).
  5. Drain the pasta and return to the pan. Stir in spinach and pasta sauce.
  6. When the veggies are done cooking, stir in the roasted vegetables. Stir in frozen peas.
  7. Transfer the pasta and veggies mixture to a 9×13″ (3-quart) baking dish. Sprinkle mozzarella or vegan mozzarella (as desired) on top of the pasta and veggies mixture and bake at 375 degrees for 10-15 minutes, or until the cheese is nice and bubbly. 
  • Prep Time: 20 minutes
  • Cook Time: 40 minutes
  • Category: Dinner
  • Method: Oven
  • Cuisine: American