Butternut Squash, Ricotta, and Sage Crostini without vegetables

1 2-pound butternut squash, peeled, seeded, cut into 1/2" cubes (about 4 cups) 3 1/2 tablespoons extra-virgin olive oil, divided, plus more for drizzling 1[...]

2 tablespoons butter , at room temperature 2 tablespoons extra virgin olive oil 1 medium onion , chopped 1 medium carrot , peeled and chopped into 1/2-inch[...]

2 tablespoons butter , at room temperature 2 tablespoons extra virgin olive oil 1 medium onion , chopped 1 medium carrot , peeled and chopped into 1/2-inch[...]