Combine butternut squash cubes, Rosemary Olive Oil, and 2 tsp of the Bourbon Maple Balsamic Vinegar in a large bowl and toss until well coated. Season with sea salt and fresh ground pepper to taste. Arrange in a single layer on a baking sheet. Roast in the preheated oven for about 20-25 minutes, until squash is tender, stirring once during roasting. Remove the squash from the oven and transfer to a serving dish and drizzle with remaining teaspoon of balsamic vinegar. Top with chopped pecans.