Mostaccioli Spinach Bake: A Comfort Food Classic

I can still remember the first time I tasted a baked pasta dish quite like this. It was at a church potluck, years ago, and amidst the sea of casseroles and desserts sat this unassuming dish of mostaccioli in a creamy, cheesy sauce. One bite, and I was hooked! The combination of tender pasta, savory spinach, and the slightly tangy tomato was pure comfort food. The bubbly, golden-brown topping sealed the deal, and I immediately sought out the recipe. This version, inspired by a lightened-up classic, brings back those fond memories with every bite.

Recipe Overview

• Prep Time: 20 minutes
• Cook Time: 30 minutes
• Total Time: 50 minutes
• Servings: 6
• Yield: One 13×9 inch baking dish
• Dietary Type: Vegetarian

Ingredients

• 8 ounces mostaccioli pasta, uncooked (about 3 cups)
• 2 tablespoons butter, divided
• 1 cup onion, vertically sliced
• 2 teaspoons garlic, minced
• 1/4 cup flour
• 2 1/2 cups skim milk
• 1 1/4 cups Parmesan cheese, shredded, divided
• 1 1/2 teaspoons dried Italian seasoning
• 1/2 teaspoon pepper
• 1 (14 1/2 ounce) can diced tomatoes, with basil, garlic and oregano
• 1 (10 ounce) package frozen chopped spinach, thawed and drained
• Cooking spray
• 1/4 cup dry breadcrumbs
• 2 tablespoons Parmesan cheese, shredded
• Parsley sprig (optional), for garnish

Equipment Needed

• Large pot
• Colander
• Medium heavy saucepan
• Large bowl
• 13 x 9 inch baking dish

Instructions

1. Preheat your oven to 350 degrees Fahrenheit (175 degrees Celsius).
2. Cook the mostaccioli pasta according to package directions, omitting salt and fat from the water. Overcooking the pasta will make the bake mushy, so aim for al dente. Once cooked, drain the pasta thoroughly in a colander and set aside.
3. Melt 1 tablespoon of butter in a medium heavy saucepan over medium-high heat. Add the sliced onion and minced garlic and sauté for approximately 5 minutes, or until the onion becomes translucent and tender. Be careful not to burn the garlic, as it will become bitter.
4. Sprinkle the flour over the sautéed onion and garlic. Cook for 30 seconds, stirring constantly to create a roux. This will help thicken the sauce. Make sure to cook the flour completely to avoid a pasty taste.
5. Gradually add the skim milk to the saucepan, whisking constantly to prevent lumps from forming. Continue to cook for about 4 minutes, or until the sauce becomes bubbly and thickens.
6. Remove the saucepan from the heat. Stir in 1/4 cup of the shredded Parmesan cheese, the Italian seasoning, and the pepper. Ensure the cheese is fully melted and incorporated into the sauce.
7. In a large bowl, combine the cooked mostaccioli pasta, the cheese sauce you just prepared, 1 cup of shredded Parmesan cheese, the can of diced tomatoes (undrained), and the thawed and drained chopped spinach. Mix all the ingredients together thoroughly, ensuring the pasta is evenly coated with the sauce. Squeeze as much moisture as possible from the spinach before adding it.
8. Spray a 13 x 9 inch baking dish generously with cooking spray. This will prevent the pasta bake from sticking to the dish.
9. Spoon the mostaccioli mixture into the prepared baking dish, spreading it evenly.
10. In a small bowl, combine the dry breadcrumbs, the remaining 2 tablespoons of shredded Parmesan cheese, and the remaining 1 tablespoon of butter (either melted or cut into small pieces). Sprinkle this mixture evenly over the top of the mostaccioli in the baking dish.
11. Bake in the preheated oven at 350 degrees Fahrenheit (175 degrees Celsius) for 30 minutes, or until the bake is thoroughly heated and the topping is golden brown and bubbly.
12. Remove the Mostaccioli Spinach Bake from the oven and let it rest for a few minutes before serving. Garnish with a fresh parsley sprig, if desired, for a pop of color.

Expert Tips & Tricks

• Pasta Perfection: Cook your pasta al dente, slightly undercooked, to prevent it from becoming mushy during baking. It will continue to cook in the oven.
• Cheese it Up: Feel free to experiment with different cheeses. A blend of mozzarella and provolone would add a nice, gooey texture. A sprinkle of Pecorino Romano offers a saltier, sharper flavor.
• Spice It Right: Adjust the amount of Italian seasoning to your preference. For a little heat, add a pinch of red pepper flakes to the sauce.
• Veggie Boost: Add other vegetables like mushrooms, bell peppers, or zucchini for extra flavor and nutrients. Sauté them along with the onion and garlic.
• Make-Ahead Magic: Assemble the entire dish ahead of time and store it, covered, in the refrigerator for up to 24 hours. Add an extra 10-15 minutes to the baking time if baking directly from the fridge.
• Sauce Consistency: If you prefer a thicker sauce, you can add a tablespoon of cornstarch mixed with two tablespoons of cold water to the milk mixture while it’s cooking.
• Butter Incorporation: Melting the tablespoon of butter for the topping makes it easier to evenly distribute, but dicing it small works just as well and creates little pockets of richness.

Serving & Storage Suggestions

Serve the Mostaccioli Spinach Bake hot, straight from the oven. It pairs well with a simple side salad or some crusty garlic bread.

Leftovers can be stored in an airtight container in the refrigerator for up to 3-4 days. To reheat, simply microwave individual portions or bake the entire dish in a preheated oven at 350 degrees Fahrenheit (175 degrees Celsius) until heated through. For best results when reheating in the oven, add a splash of milk or water to the dish to prevent it from drying out.

The bake can also be frozen for longer storage. Wrap it tightly in plastic wrap and then foil, or place it in a freezer-safe container. It can be frozen for up to 2-3 months. Thaw it overnight in the refrigerator before reheating as described above.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	396 kcal	N/A
Total Fat	11.9 g	18%
Saturated Fat	6.8 g	34%
Cholesterol	32 mg	10%
Sodium	651.5 mg	27%
Total Carbohydrate	51.7 g	17%
Dietary Fiber	4.4 g	17%
Sugars	5.3 g	N/A
Protein	21.6 g	43%

Note: Nutritional information is an estimate and may vary based on specific ingredients and preparation methods.

Variations & Substitutions

• Gluten-Free: Use gluten-free mostaccioli pasta and gluten-free breadcrumbs to make this dish gluten-free.
• Dairy-Free: Substitute the skim milk with almond milk or another plant-based milk alternative. Use a dairy-free Parmesan cheese substitute.
• Meat Lovers: Add cooked ground beef, Italian sausage, or shredded chicken to the pasta mixture for a heartier meal.
• Spicy Kick: Add a pinch of red pepper flakes to the sauce or use a spicy Italian sausage for extra heat.
• Seasonal Vegetables: Customize the vegetables based on what’s in season. Roasted butternut squash or sweet potatoes would be delicious in the fall.
• Tomato Sauce Swap: If you don’t have diced tomatoes with basil, garlic, and oregano, you can use plain diced tomatoes and add a teaspoon of Italian seasoning to the sauce.
• Pesto Power: Stir in a tablespoon or two of pesto to the sauce for a boost of flavor.

FAQs (Frequently Asked Questions)

Q: Can I use fresh spinach instead of frozen?
A: Yes, you can use fresh spinach. You’ll need about 10 ounces of fresh spinach. Sauté it until wilted before adding it to the pasta mixture. Be sure to drain any excess water.

Q: Can I make this dish ahead of time and freeze it?
A: Absolutely! Assemble the bake, wrap it tightly, and freeze it for up to 2-3 months. Thaw it overnight in the refrigerator before baking.

Q: How do I prevent the pasta bake from drying out?
A: To prevent drying, cover the dish with foil during the first 15 minutes of baking. Remove the foil for the last 15 minutes to allow the topping to brown.

Q: Can I use a different type of pasta?
A: Certainly! While mostaccioli is traditional, penne, rigatoni, or even rotini would work well in this recipe. Just ensure the pasta shape is tubular and has ridges to hold the sauce.

Q: My sauce is too thick. How can I thin it out?
A: Gradually add more milk, a tablespoon at a time, until you reach your desired consistency. Stir well after each addition.

Final Thoughts

Whether you’re looking for a comforting weeknight meal or a crowd-pleasing dish for a potluck, this Mostaccioli Spinach Bake is sure to be a hit. The creamy sauce, tender pasta, and flavorful vegetables create a symphony of flavors that will leave you wanting more. Don’t be afraid to experiment with different ingredients and variations to make it your own. I encourage you to give this recipe a try and share your feedback! Pair it with a crisp green salad and a glass of your favorite red wine for a truly satisfying meal. Happy cooking!