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1
Prepare the Ricotta Biscuit dough: Sift the flour, sugar, baking powder, baking soda, and salt into a large mixing bowl. Place the bowl in the freezer to chill for 20 minutes. Add the butter to the dry ingredients and toss to combine. Pinch and smear the pieces of butter between your fingers. Processing the butter like this creates small leaves of butter that layer in the dough, resulting in flakes later. Once all the butter chunks have been pinched, grab small handfuls of flour and butter and rub the two together between the palms of your hands until the mixture resembles uneven pebbles on a sandy beach.
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2
Create a well in the center of the mixture and add 1 cup of the buttermilk. Using a fork, toss the flour and butter from around the edge of the well into the center. Fluff the buttermilk and flour mixture with the fork five or six times, until shaggy looking.
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3
Crumble the ricotta cheese into tablespoon-size chunks over the dough, making sure not to break up the cheese too much. Using your hands with your fingers spread wide open, loosely incorporate the cheese into the dough with a lift-and-gently-squeeze motion. Drizzle the remaining 1 cup of buttermilk over the dough while using the fork to bring the mixture together into a loose and shaggy mass.
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4
Scrape the dough onto a lightly floured work surface and use your hands to shape the dough into a 10 x 7-inch rectangle. Fold the rectangle in thirds like a letter and then rotate 90 degrees. Using a rolling pin, flatten the dough back into a 10 x 7-inch rectangle. Repeat the folding, rotating, and rolling process two more times, ending with the dough shaped into a 10 x 7-inch rectangle of about 1-inch thickness. Wrap the dough with plastic and refrigerate for 30 minutes. Return the dough to the work surface and roll it out to about 3/4-inch thickness. Cut it into 2-inch squares or use a round 2-inch cutter to make mini-biscuits.
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5
Position a rack in the center of your oven and preheat the oven to 350u00b0F. Place a parchment-lined baking sheet on the lower rack of the oven to catch any drips.
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6
Combine the tomato slices, sugar, lemon juice, vinegar, nutmeg, flour, and salt in a 2-quart baking dish. Let the tomatoes macerate for 10 minutes.
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7
Dot the tomatoes with the butter and arrange the biscuit dough on top. Brush the biscuits with the heavy cream. Bake the pudding until the biscuits are browned and baked through and the juices from the tomatoes bubble up around the edges of the dish, about 45 minutes. Serve the pudding warm. Any leftovers will keep well at room temperature overnight, but it's really best eaten the same day.
