Butternut Squash Bread without maple custard pecans

1 medium butternut squash, halved and seeded 1 tablespoon maple syrup 1 1/2 cups spelt flour or 1 1/2 cups all-purpose flour 1/2 cup sugar 1/2 cup walnuts ,[...]

3 cups cubed peeled butternut squash (1/2-inch cubes) cooking spray 1/2 teaspoon salt , divided 1 teaspoon olive oil 1 cup chopped onion 1 garlic clove ,[...]