Spaghetti Squash Chicken Tetrazzini

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This creamy spaghetti squash chicken tetrazzini casserole is full of vegetables and comforting flavors. It comes together quickly, and will have your family begging for more! This recipe is low carb, sugar free, gluten free, and a Trim Healthy Mama S Recipe.

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Recently, I was looking through an old cookbook for inspiration and came across a recipe for chicken tetrazzini. The recipe intrigued me, and I set to work to see how I could make this dish low carb. Long after the recipe was created and the dish eaten, I began to wonder - "Why it is called tetrazzini?" Turns out, according to my source,

"The dish is named after Italian opera star Luisa Tetrazzini. It is widely believed to have been invented circa 1908–1910 by Ernest Arbogast, the chef at the Palace Hotel in San Francisco, California, where Tetrazzini was a long-time resident."

So this delicious chicken dish was named after a famous opera star! I never would have guessed!

But you are not here to find out about the history of our beloved Chicken Tetrazzini! You want the recipe! Of course, the pasta in this dish has been replaced with spaghetti squash, and I did not use any kind of crunchy coating for the top. But you could use crushed pork rinds if you wanted a crispy topping.

Now, I must confess something to you . . . I do not like mushrooms. I know, I know! My husband loves them, but I do not. I can eat them raw in salads. But I actually ate them in this casserole, and I didn't mind them! I must be growing up! (If you do not like mushrooms, you can omit them.)

Now, I know some people do not like cooking spaghetti squash. And if you try to cut it raw, it can be downright dangerous! Those squash are so HARD! I'm always afraid I'm going to cut my finger off! But I have a secret for you . . . I cook my spaghetti squash in my Instant Pot! Yes! I love my Instant Pot, and I use it probably three to four times per week.

I don't poke any holes in the squash, I just place the whole squash directly in my Instant Pot Liner, add 1 cup of water, set to manual pressure for 20 minutes, then do a quick pressure release. And there you go - a completely cooked spaghetti squash that did not cause any imminent danger to my fingers! (Ha!) (Someone has since mentioned that you can poke a couple of holes in the squash to release steam, but I have always cooked them without holes.) My Instant Pot has been such a time saver!

This is the Instant Pot I have.

Instant Pot DUO60 6 Qt 7-in-1 Multi-Use Programmable Pressure Cooker, Slow Cooker, Rice Cooker, Steamer, Sauté, Yogurt Maker and Warmer

So, what do you need for Spaghetti Squash Chicken Tetrazzini?

2 Cups Cooked Spaghetti Squash

2 Cups Cooked Chicken Breast

1 Tablespoon Butter

½ Cup Chopped Onion

3 Garlic Cloves, Minced

2 Cups Fresh Sliced Mushrooms

3 Tablespoons Baking Blend

1 Cup Chicken Broth

1 Cup Half & Half

¾ Teaspoon Thyme

1 Teaspoon Basil

½ Teaspoon Salt

¼ Teaspoon Black Pepper

½ Cup Parmesan Cheese

½ Cup Shredded Cheese (Any kind you prefer)

Spaghetti Squash Chicken Tetrazzini

5 from 1 vote

Print Pin Rate

Prep Time: 25

Cook Time: 30

Total Time: 55

Servings: Servings

Ingredients

2 Cups Cooked Spaghetti Squash
2 Cups Cooked Chicken Breast
1 Tablespoon Butter
½ Cup Chopped Onion
3 Garlic Cloves Minced
2 Cups Fresh Sliced Mushrooms
3 Tablespoons Baking Blend*
1 Cup Chicken Broth
1 Cup Half & Half
¾ Teaspoon Thyme
1 Teaspoon Basil
½ Teaspoon Salt
¼ Teaspoon Black Pepper
½ Cup Grated Parmesan Cheese the green can
½ Cup Shredded Cheese Any kind you prefer

Instructions

Preheat oven to 350.
In a medium skillet, melt butter.
Add chopped onion and minced garlic and sautee for 2-3 minutes.
Add sliced mushrooms. Cook and stir until mushrooms begin to soften.
Sprinkle Baking Blend over onion/mushroom mixture and stir to coat.
Add chicken broth, half and half, thyme, basil, salt and pepper.
Bring to a boil, then reduce heat and simmer for 3-4 minutes, or until sauce begins to thicken.
Add parmesan cheese and stir well.
Remove from heat.
Place spaghetti squash and cooked chicken into a greased, 2 quart dish. (Mix well)
Pour cream sauce over spaghetti squash/chicken mixture.
Top with ½ Cup shredded cheese.
Bake for 25 - 30 minutes, or until bubbly. (I broiled mine for a couple minutes at the end,)

Notes

*If you do not have the Baking Blend, you should be able to use 1 Tablespoon each of almond flour, coconut flour, and flax meal.

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Nutrition Facts

Amount Per Serving

Calories 262

% Daily Value

Total Fat 14g

21%

Saturated Fat 7g

36%

Trans Fat 0g

Cholesterol 87mg

29%

Sodium 660mg

28%

Total Carbohydrates 10g

Dietary Fiber 3g

12%

Sugars 4g

Protein 26g

Vitamin A 7%

Vitamin C undefined%

Calcium 25%

Iron undefined%

Spaghetti Squash Chicken Tetrazzini