Blackberry-Lime Fool with Toasted Oat Crumble

Ingredients

• 2 1/2 cup fresh blackberries, divided
• 1/4 cup granulated sugar, divided
• 1 lime, zested and juiced
• 1 pinch fine sea salt
• 1/2 cup old-fashioned rolled oats
• 3 tbsp unsalted butter
• 3 tbsp light brown sugar, packed
• 1/4 tsp ground cinnamon
• 1 cup cold heavy whipping cream
• 1/4 cup plain whole-milk Greek yogurt
• 1 tsp vanilla extract
• 2 tbsp powdered sugar
• Fresh mint leaves, for garnish

Steps

1. 1

   Put 2 cups of the blackberries in a bowl with 2 tablespoons of the granulated sugar, the lime juice, and the pinch of salt. Crush them with a fork until juicy but still chunky. You want rubble, not puree. Let them sit and macerate for 15 minutes while you do everything else; the berries will weep a deep purple syrup that does most of the work for you.

2. 2

   Make the crumble. Melt the butter in a small skillet over medium heat, then stir in the oats, brown sugar, and cinnamon. Keep it moving for 5 to 6 minutes until the oats smell toasty and clump into crisp, caramelized rubble. Do not walk away, because brown sugar goes from golden to scorched in about ten seconds. Scrape it onto a plate to cool; it firms up and turns crunchy as it sits.

3. 3

   Whip the cream. In a cold bowl, beat the heavy cream, powdered sugar, vanilla, and lime zest to soft peaks. The cream should hold a lazy fold, not stand at attention. Whisk in the Greek yogurt by hand for the last few turns; it adds a clean tang and keeps the cream from collapsing into soup an hour later.

4. 4

   Marble, do not mix. Spoon about a third of the macerated berries and their syrup over the cream and drag a spoon through just once or twice. You are marbling, not stirring. Streaks are the whole point, and a fully blended fool is a sad, uniform pink we do not allow here.

5. 5

   Layer it up. In glasses or a wide bowl, alternate the marbled cream, spoonfuls of the remaining crushed berries, the reserved 1/2 cup whole blackberries, and handfuls of the oat crumble. Finish with a last shower of crumble, a few whole berries, extra lime zest, and torn mint. Serve within the hour while the crumble is still crisp. Alternatively, chill up to 4 hours and add the crumble at the very last second so it stays crunchy.