Caramelized Onion & Sage Stuffed Acorn Squash
A comforting vegetarian main course featuring sweet roasted squash filled with aromatic caramelized onions and fresh sage, perfect for fall dinners. This american-inspired vegetarian (vegetarian) ready in about 55 minutes pairs olive oil, large, thinly sliced yellow onion, finely chopped fresh sage leaves for a weeknight-friendly dinner that comes together with one pan and minimal cleanup. Each serving lands at about 210 calories and feeds 4, so it slots cleanly into a weekly meal plan and pairs well with a quick salad or grain on the side. Tap "Plan a meal with the AI" below to drop this recipe into your week and send the ingredients straight to Instacart. Nutrition values are approximate, calculated from USDA FoodData Central (fdc.nal.usda.gov) — verify against ingredient labels for any health-driven dietary plan.
Ingredients
- 2 medium (about 1.5 lbs each) acorn squash
- 2 tbsp olive oil
- 1 large, thinly sliced yellow onion
- 1/4 cup, finely chopped fresh sage leaves
- 1/2 cup vegetable broth
- 1 tbsp balsamic vinegar
- 1/2 tsp salt
- 1/4 tsp black pepper
Instructions
- Step 1: Preheat oven to 400°F (200°C). Cut each squash in half lengthwise, scoop out seeds and stringy pulp, then brush cut sides with 1 tbsp olive oil and sprinkle with 1/4 tsp salt.
- Step 2: Place squash cut-side down on a parchment-lined baking sheet and roast for 25 minutes until tender when pierced with a fork.
- Step 3: While squash roasts, heat remaining 1 tbsp olive oil in a medium skillet over medium heat. Add sliced onions and cook for 12-15 minutes, stirring occasionally, until deeply golden and caramelized.
- Step 4: Stir in chopped sage and balsamic vinegar, then cook for 1 minute until fragrant. Add vegetable broth and simmer for 3 minutes until reduced by half and slightly thickened.
- Step 5: Remove squash from oven, flip cut-side up, and spoon onion mixture evenly into each cavity. Return to oven for 5 minutes to heat through.
Equipment for this recipe
Top-rated tools to make this recipe successfully.
Frequently asked questions
How long does Caramelized Onion & Sage Stuffed Acorn Squash take to make?
Total time is about 55 minutes (25 min prep + 30 min cook). Most home cooks find this fits comfortably into a weeknight; double the batch on Sunday for two dinners.
How do I store leftover Caramelized Onion & Sage Stuffed Acorn Squash?
Cool to room temperature within 2 hours, then store in an airtight container in the fridge for up to 4 days. Reheat covered in a 350°F oven for 10-12 minutes, or microwave at 70% power in 60-second bursts to keep olive oil from drying out.
Can I substitute ingredients in Caramelized Onion & Sage Stuffed Acorn Squash?
Yes — most ingredients in this recipe have flexible swaps. For oil, use any neutral high-smoke-point oil (avocado, grapeseed, refined coconut). For aromatics, dried herbs at ⅓ the volume of fresh work in a pinch. The full ingredient list is shoppable on Instacart so you can see substitutes in real time.
How do I scale Caramelized Onion & Sage Stuffed Acorn Squash for a different number of people?
The recipe is written for 4 servings. Multiply each ingredient by (your serving target / 4). Cook time stays roughly the same up to 2x; for 3-4x batches, switch from a skillet to a sheet pan or stockpot so the food isn't crowded — overcrowding steams instead of browns.
Is Caramelized Onion & Sage Stuffed Acorn Squash vegetarian?
Yes — this recipe is tagged vegetarian based on its ingredient list. Always cross-check labels for packaged ingredients (sauces, broths, condiments) since formulations vary by brand.
What others are saying
- ★★★★★
Absolutely wonderful.
- ★★★★☆
Very good for a 30-minute recipe. Would bump up the spice level though.
- ★★★★☆
Good flavors but the sauce was a bit thin. I'd reduce it longer.
