Into a 10-inch cast iron skillet or an 8x8-inch square pan, combine blueberries, sugar, cornstarch, lemon juice and salt. Toss to combine and set aside.
3 Pints Containers of Fresh Blueberries, ⅓ Cup Granulated Sugar, 2 tablespoon Cornstarch, 1 tablespoon Lemon Juice, Pinch Salt, 8 tablespoon Vegan Butter, cold, cut into ¼" cubes