In a small saucepan, melt ¼ cup butter over medium heat, then reduce heat to low, add 3 minced cloves of garlic, and cook for 1 minute. Remove from heat.
In a mixing bowl toss together bread crumbs, parmesan, thyme, rosemary, chopped pecans, and season lightly with ¾ teaspoon salt and ¼ teaspoon black pepper.
Drizzle 2 tablespoon of the garlic butter over the panko mixture then toss to evenly coat.
Brush the remaining butter and garlic mixture over the squash in a baking dish, then season the squash with salt and pepper. (You can taste the breadcrumbs, so here I say, season to taste, starting with ¼ teaspoon.)