How to Make It
Preheat oven to 375°F. Place berries, 2 tablespoons flour, ⅓ cup sugar, and a pinch of salt in a large bowl; toss to coat. Spoon mixture into a lightly greased 8-inch square baking pan (or other 2-quart baking dish); set aside.
Whisk together 3 tablespoons sugar, remaining 1½ cups flour, and remaining ½ teaspoon salt in a medium bowl. Add butter; rub into flour mixture with your fingers until mixture forms pea-sized pieces. Add 1 cup plus 2 tablespoons cream; mix with a fork until combined. (Dough will be sticky.)
Form dough into biscuit-sized mounds (2 to 2½ inches wide) using a large spoon or ice cream scoop; arrange over berries in pan. Brush dough mounds with remaining 2 tablespoons cream; sprinkle tops with remaining 1 tablespoon sugar.
Bake until berries are bubbling and biscuits are deeply golden, 45 to 50 minutes, covering with aluminum foil after 40 minutes to prevent overbrowning, if needed. Cool 15 minutes, and serve.