Description
A creamy and cheesy Spaghetti Squash Au Gratin that transforms the humble spaghetti squash into a delightful, flavorful side or main dish. This recipe combines tender spaghetti squash strands, sautéed onions, sharp Cheddar cheese, and fat-free sour cream for a low-carb, comforting dish with a golden, bubbly crust.
Ingredients
Scale
For the Gratin
- 1 medium spaghetti squash – a unique, low-carb substitute that mimics pasta texture
- 1 small yellow onion – adds a sweet and savory flavor base
- 3 tablespoons light margarine – for a rich and creamy mouthfeel without the heaviness
- ¾ cup fat-free sour cream – contributes creaminess while keeping it light
- 1 cup shredded light Cheddar cheese – melts beautifully and adds a sharp, comforting flavor
For Seasoning
- 1 teaspoon red pepper flakes – brings a gentle heat to elevate the dish
- ¼ teaspoon garlic powder – enhances the savory depth with ease
- Salt to taste – essential for bringing all the flavors together
- Freshly ground black pepper to taste – gives a fragrant kick that rounds out the dish
For the Baking
- Cooking spray – keep your baking dish non-stick for easy serving and cleanup
Instructions
- Prepare the Squash: Place the spaghetti squash in a covered dish and add ¼ inch of water. Microwave it on high for 10 to 12 minutes until tender. Scrape the insides with a fork to create spaghetti-like strands and transfer them to a small bowl.
- Sauté the Onions: In a medium skillet, heat the light margarine over medium heat. Add the chopped onion, red pepper flakes, garlic powder, salt, and freshly ground black pepper. Stir and cook until the onion is beautifully browned and softened, about 5 to 10 minutes.
- Preheat the Oven: Set your oven to preheat at 375°F (190°C). Lightly grease a baking dish with nonstick cooking spray to ensure the gratin doesn’t stick.
- Mix Ingredients: In a mixing bowl, combine the cooked spaghetti squash strands, sautéed onion mixture, fat-free sour cream, and half of the shredded light Cheddar cheese. Mix well, then transfer this creamy blend to the prepared baking dish and spread it evenly.
- Bake and Broil: Evenly top the mixture with the remaining Cheddar cheese. Bake in the preheated oven for 20 to 25 minutes until the gratin is bubbly. For an extra golden, crispy crust, turn on the broiler for the last 2 to 3 minutes, watching closely to avoid burning the cheese.
Notes
- Serve with fresh herbs like parsley for an added burst of flavor.
- Store leftovers in an airtight container in the refrigerator for up to 3 days.
- Reheat gently in the oven or microwave with a splash of water to maintain texture and moisture.
- Freeze portions in airtight containers for up to 3 months; thaw in the fridge overnight before reheating.
- Customize the gratin by adding herbs, spices, proteins, or nuts to suit your taste.
- Prep Time: 10 minutes
- Cook Time: 25 minutes
- Category: Side Dish
- Method: Baking
- Cuisine: American
Keywords: spaghetti squash, au gratin, low-carb, cheesy side dish, vegetarian, healthy dinner, microwave preparation, baked gratin
