Preheat oven to 400°F (200°C).
Cut acorn squashes in half and remove seeds.
Brush with olive oil, season with salt and pepper.
Place cut side down on a baking sheet and roast for 30 minutes.
Cook quinoa in vegetable broth according to package instructions.
In a pan, sauté onion, garlic, and mushrooms in olive oil until soft.
Mix cooked quinoa, sautéed vegetables, cranberries, pecans, and thyme.
Season with salt and pepper.
Stuff roasted squash halves with the quinoa mixture.
Bake for an additional 15 minutes.