Chicken Alfredo Spaghetti Squash Casserole: Whole30, Paleo, Low Carb, GF

This Chicken Alfredo Spaghetti Squash Casserole: Whole30, Paleo, Low Carb, GF is a delightful twist on classic comfort food. With its creamy texture and rich flavors, this dish is perfect for busy weeknights or meal prepping for the week ahead. Packed with chicken, broccoli, and spaghetti squash, it offers a satisfying yet healthy alternative that everyone will love. Whether you’re following a specific diet or simply looking for a tasty casserole, this recipe checks all the boxes!

Why You’ll Love This Recipe

  • Healthy and Nutritious: This casserole is loaded with vegetables and lean protein, making it a nourishing choice for any meal.
  • Easy to Prepare: With minimal prep and cooking time, you can have this dish ready in just over an hour.
  • Versatile: Feel free to swap in your favorite vegetables or proteins to make it your own.
  • Meal Prep Friendly: Perfect for leftovers, this dish reheats well and maintains its flavor and texture.
  • Diet-Friendly: It adheres to Whole30, paleo, low carb, gluten-free, and dairy-free diets without sacrificing taste.

Tools and Preparation

Having the right tools makes cooking easier and more enjoyable. Here’s what you’ll need to whip up this delicious casserole.

Essential Tools and Equipment

  • Large casserole dish
  • Baking sheet
  • Sharp knife
  • Forks (for shredding spaghetti squash)
  • Measuring spoons

Importance of Each Tool

  • Large casserole dish: Ideal for mixing all ingredients together evenly while providing ample space for baking.
  • Baking sheet: Perfect for roasting the spaghetti squash without mess; ensures even cooking.
  • Sharp knife: Essential for easily cutting through the spaghetti squash and diced chicken.

Ingredients

Protein

  • 1 lb boneless, skinless chicken breasts

Vegetables

  • 1 medium white onion, diced
  • 3 cups broccoli florets
  • 1 medium sized spaghetti squash

Sauce

  • 1 jar Primal Kitchen Garlic Alfredo Sauce (or homemade Whole30/Dairy-Free Alfredo)

Seasonings

  • 1/2 tsp salt (plus more for seasoning chicken)
  • 1/2 tsp garlic powder
  • 1/2 tsp pepper (plus more for seasoning chicken)

Oils

  • 1/2 tbsp olive oil (or avocado oil)

How to Make Chicken Alfredo Spaghetti Squash Casserole: Whole30, Paleo, Low Carb, GF

Step 1: Preheat the Oven

Preheat your oven to 400 degrees F. This ensures that everything bakes evenly.

Step 2: Prepare the Spaghetti Squash

  1. Cut the spaghetti squash in half lengthwise.
  2. Scrape out the seeds using a spoon.
  3. Spray the cut sides with cooking oil and sprinkle with salt.
  4. Place the squash cut side down on a baking sheet.
  5. Insert into the oven on an upper rack.

Step 3: Season the Chicken

In a large casserole dish:
1. Add the chicken breasts and diced onion.
2. Drizzle with olive oil.
3. Sprinkle with salt and pepper.
4. Toss to coat everything evenly.
5. Place into the oven on a lower rack.

Step 4: Bake Initial Ingredients

Bake both the spaghetti squash and chicken mixture for about 30 minutes.

Step 5: Combine Chicken and Squash

After 30 minutes:
1. Remove both dishes from the oven.
2. Dice the cooked chicken breasts into bite-sized pieces.
3. Scrape out spaghetti squash “threads” using a fork from each half into the casserole dish.

Step 6: Mix Everything Together

Add these ingredients to your casserole dish:
1. The alfredo sauce,
2. Broccoli florets,
3. Remaining salt, pepper, and garlic powder.

Use two forks to stir everything together until well combined.

Step 7: Final Bake

Return your casserole dish to the oven:
Bake for an additional 30 minutes or until the top is slightly golden brown.

Step 8: Serve

Once done baking:
Remove from oven, serve into bowls, and enjoy your hearty Chicken Alfredo Spaghetti Squash Casserole!

How to Serve Chicken Alfredo Spaghetti Squash Casserole: Whole30, Paleo, Low Carb, GF

Serving your Chicken Alfredo Spaghetti Squash Casserole can enhance the meal experience. Pair it with some delicious sides or add toppings for extra flavor. Here are some serving suggestions that will make your dish even more enjoyable.

With Fresh Herbs

  • Chopped Parsley: Sprinkle fresh parsley on top for a burst of color and freshness.
  • Basil Leaves: Add torn basil leaves for an aromatic touch that complements the alfredo sauce.

Topped with Nuts

  • Pine Nuts: Toasted pine nuts add a crunchy texture that contrasts nicely with the creamy casserole.
  • Sliced Almonds: For a nutty flavor, sprinkle sliced almonds on top just before serving.

Accompanied by Salads

  • Mixed Green Salad: A light salad with vinaigrette balances the richness of the casserole.
  • Caesar Salad: A Whole30-friendly Caesar salad can add a classic touch to your meal.

How to Perfect Chicken Alfredo Spaghetti Squash Casserole: Whole30, Paleo, Low Carb, GF

To ensure your Chicken Alfredo Spaghetti Squash Casserole turns out perfectly every time, follow these helpful tips.

  • Use Evenly Sized Chicken Pieces: Cut chicken breasts into similar sizes for even cooking.
  • Check Squash Doneness: Make sure the spaghetti squash is fork-tender before mixing it into the casserole.
  • Adjust Seasonings to Taste: Feel free to tweak the salt and pepper according to your preference for a customized flavor.
  • Experiment with Vegetables: Add other veggies like bell peppers or spinach for added nutrition and color.
  • Store Properly for Leftovers: Keep leftovers in an airtight container in the fridge to maintain freshness.
  • Reheat Gently: Reheat in the oven or microwave until warmed through without drying out.

Best Side Dishes for Chicken Alfredo Spaghetti Squash Casserole: Whole30, Paleo, Low Carb, GF

Pairing side dishes with your Chicken Alfredo Spaghetti Squash Casserole can elevate your meal. Here are some great options to consider:

  1. Garlic Roasted Asparagus: Lightly seasoned asparagus roasted until tender adds a lovely crunch.
  2. Zucchini Noodles: Spiralized zucchini tossed in olive oil makes a fresh and low-carb companion.
  3. Crispy Brussels Sprouts: Oven-roasted Brussels sprouts with balsamic glaze deliver a punch of flavor.
  4. Cauliflower Rice: Fluffy cauliflower rice serves as a versatile base that soaks up flavors well.
  5. Steamed Green Beans: Simple steamed green beans provide a colorful and nutritious side.
  6. Avocado Salad: A refreshing avocado salad drizzled with lime juice enhances creaminess and adds healthy fats.

Common Mistakes to Avoid

When making Chicken Alfredo Spaghetti Squash Casserole, it’s easy to make some common mistakes. Here are a few to watch out for:

  • Skipping the seasoning: Many people forget to season the chicken and vegetables properly. Always add salt and pepper to enhance the flavors.
  • Overcooking the spaghetti squash: Be careful not to cook the spaghetti squash too long in the oven. It should be tender but still firm enough to create threads.
  • Using the wrong sauce: Not all Alfredo sauces fit dietary restrictions. Ensure you use a Whole30 or dairy-free option to keep the casserole compliant.
  • Crowding the casserole dish: If your dish is too full, it may not cook evenly. Make sure there’s enough space for heat circulation.
  • Not dicing chicken properly: If you don’t dice the chicken into small pieces after baking, it may not mix well with the other ingredients.

Storage & Reheating Instructions

Refrigerator Storage

  • Store leftovers in an airtight container for up to 4 days.
  • Allow the casserole to cool completely before sealing.

Freezing Chicken Alfredo Spaghetti Squash Casserole: Whole30, Paleo, Low Carb, GF

  • Freeze in a freezer-safe container for up to 3 months.
  • Portion out servings for easy reheating later.

Reheating Chicken Alfredo Spaghetti Squash Casserole: Whole30, Paleo, Low Carb, GF

  • Oven: Preheat the oven to 350°F and bake until heated through (about 20-25 minutes).
  • Microwave: Heat individual portions on high for 1-2 minutes, stirring halfway through.
  • Stovetop: Place in a skillet over medium heat, stirring occasionally until warmed.

Frequently Asked Questions

Here are some common questions about Chicken Alfredo Spaghetti Squash Casserole that you might find helpful.

Can I make Chicken Alfredo Spaghetti Squash Casserole ahead of time?

Yes! You can prepare it a day in advance and store it in the refrigerator until ready to bake.

What can I substitute for broccoli in this casserole?

You can use any green vegetable like spinach or zucchini for variety while keeping it healthy.

Is this recipe suitable for meal prep?

Absolutely! This casserole is perfect for meal prep as it keeps well and reheats nicely throughout the week.

How do I customize Chicken Alfredo Spaghetti Squash Casserole?

Feel free to add other vegetables like bell peppers or mushrooms. You can also spice it up with some red pepper flakes!

Final Thoughts

Chicken Alfredo Spaghetti Squash Casserole is a delightful dish that combines comfort and healthiness. Its versatility allows you to customize ingredients while adhering to dietary preferences such as Whole30 or paleo. Give this recipe a try; you’re sure to enjoy its delicious flavors and hearty texture!

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Chicken Alfredo Spaghetti Squash Casserole: Whole30, Paleo, Low Carb, GF

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Chicken Alfredo Spaghetti Squash Casserole is a healthy, comforting dish that gives a nutritious twist to your classic favorite. This Whole30, paleo, low-carb, and gluten-free recipe combines tender chicken, vibrant broccoli, and creamy alfredo sauce with spaghetti squash, making it an ideal choice for busy weeknights or meal prep. With its rich flavors and satisfying texture, this casserole is sure to win over both health enthusiasts and comfort food lovers alike. Enjoy it on its own or pair it with fresh herbs or crunchy nuts for added flair!

  • Author: Virginia
  • Prep Time: 20 minutes
  • Cook Time: 60 minutes
  • Total Time: 1 hour 20 minutes
  • Yield: Serves 6
  • Category: Dinner
  • Method: Baking
  • Cuisine: Paleo

Ingredients

Scale
  • 1 lb boneless, skinless chicken breasts
  • 3 cups broccoli florets
  • 1 medium spaghetti squash
  • 1 jar Primal Kitchen Garlic Alfredo Sauce (or homemade)
  • 1/2 tsp salt (plus more for seasoning chicken)
  • 1/2 tsp garlic powder
  • 1/2 tsp pepper (plus more for seasoning chicken)
  • 1/2 tbsp olive oil (or avocado oil)
  • 1 medium white onion, diced

Instructions

  1. Preheat the oven to 400°F.
  2. Halve the spaghetti squash lengthwise and remove seeds. Season with salt and olive oil before placing cut side down on a baking sheet.
  3. In a casserole dish, mix diced chicken with onion and seasonings. Drizzle with olive oil and bake alongside the squash for 30 minutes.
  4. Once cooked, shred the spaghetti squash into threads and combine with diced chicken, broccoli florets, and alfredo sauce in the casserole dish.
  5. Stir well and return to the oven for an additional 30 minutes until golden brown.

Nutrition

  • Serving Size: 1 cup (240g)
  • Calories: 320
  • Sugar: 4g
  • Sodium: 600mg
  • Fat: 12g
  • Saturated Fat: 2g
  • Unsaturated Fat: 8g
  • Trans Fat: 0g
  • Carbohydrates: 28g
  • Fiber: 6g
  • Protein: 28g
  • Cholesterol: 70mg

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