I start by preheating my oven to 400 °F (200 °C). I cut off the tops (about 1 inch down including stem) and scoop out all the seeds and membranes until the pumpkin is clean.
Then I rub the inside of each pumpkin with 2 Tbsp olive oil, season with salt and pepper, and place them (top off) on a baking sheet. I roast until the flesh becomes tender, which takes about 35 minutes.
While the pumpkins roast, I heat the remaining olive oil in a large skillet. I sauté the diced carrot, onion, and celery until they soften, about 5 minutes.
Then I add the ground turkey to that pan, stirring often and breaking it into small pieces. Once browned and cooked (~5 minutes), I season with salt and pepper and transfer it to a mixing bowl with the bread cubes.
I reduce the oven temp to 350 °F (180 °C). In the same pan (wiped clean), I melt the butter over medium-low heat and add the chopped sage, cooking until the butter turns nutty and fragrant (≈4 minutes).
I pour the sage butter over the turkey–bread mixture, then add chicken stock and toss until the cubes are moistened. I stir in 1 cup of shredded Gruyère and toss to combine.
I fill each roasted pumpkin nearly to the brim with the stuffing mixture, top with the remaining Gruyère, and bake for around 15 minutes until the
Once out of the oven, I serve immediately—propping the pumpkin top next to it.