Zack's Favorite Plum Buckle VDF

Way back in 2016 I made this recipe (well, the full dairy version) and brought it into the office for a treat. That job gave me some of the best friends of my life, and I find myself today, making it again, for one of them. Back then, plum buckle became my colleague Zack’s favorite baked good I’d ever brought (possibly just because he was absolutely tickled by the name). To this day I think of Zack every time I make a buckle.

Snapshot

• Implements: 9-inch pie plate; mixing bowl; whisk; measuring cups and spoons; zester or microplane; knife; cutting board
• Oven setting: 350°F (177°C)
• Batch size: one 9-inch pie plate
• Notes: Use only as many plums as fit comfortably on top.

Ingredients

Batter

• ½ cup plant butter, melted
• 1⅓ cups bread flour (or 1½ cups all-purpose flour)
• 2 Tsp baking powder
• ⅛ Tsp salt
• 1 cup sugar
• 1 cup oat milk
• 1 Tsp vanilla extract
• ¼ Tsp almond extract

Fruit and topping

• About 2 lb plums, sliced into wedges
• 2 Tbsp sugar, for tossing with the plums if needed
• 1 Tbsp flour or 2 Tsp cornstarch, for tossing with the plums
• About ½ Tsp orange zest or lemon zest
• 1 Tbsp raw sugar, for topping
• Avocado oil spray, for the pie plate

Method

1. Heat the oven and prep the pan

   Preheat the oven to 350°F (177°C). Lightly spray a 9-inch Pyrex pie plate with avocado oil. A light coat is enough. You want insurance against sticking, not an oil slick.

2. Prep the plums

   Slice the plums into wedges. For small plums, 8 wedges each is perfect. Toss them with 1 Tbsp flour or 2 Tsp cornstarch and the zest.

   Taste one piece before you decide on the sugar. If the plums are sweet and balanced, you can skip it. If they taste tart, grapey, flat, or slightly bitter at the skin, add 2 Tbsp sugar and toss again. Let the fruit sit while you make the batter.

3. Make the batter

   In a mixing bowl, whisk together the flour (bread or all-purpose), baking powder, and salt.

   Add the sugar, oat milk, vanilla extract, and almond extract. Whisk just until combined, then whisk in the melted plant butter. Stop when the batter is smooth enough to pour. This is not the moment to develop gluten for sport.

4. Assemble the buckle

   Pour the batter into the prepared pie plate.

   Arrange the plum wedges over the top in a snug layer with slight overlap. Gently press them into the batter. You want good coverage, but not crowding and not a pile. If you still have extra plums once the surface is fully covered, save them for later.

   Sprinkle the raw sugar over the top.

5. Bake

   Bake for 55 to 65 minutes. Start checking around 50 minutes.

   It is done when the edges are golden and the center looks set rather than liquidy. A toothpick inserted into a cakey part should come out mostly clean. Try not to test directly through a plum unless you enjoy false alarms.

6. Cool before serving

   Let the buckle cool for at least 20 to 30 minutes before slicing. It will seem soft when it first comes out, then settle into itself as it rests.

Notes, swaps, and guardrails

How to decide whether the plums need sugar

Taste the fruit raw before it goes in.

• If the plums taste sweet, balanced, and juicy, toss them only with the starch and zest.
• If they taste tart, grapey, or faintly bitter, use the full 2 Tbsp sugar.
• If they are aggressively sour, you can go a little higher, but start with 2 Tbsp and trust the cake to do some of the work.

Slightly imperfect plums often bake up beautifully. Raw fruit that feels a little underwhelming can turn jammy and deep in the oven.

Lemon zest, orange zest, and what to do if you don’t have either

Lemon zest is the sharper, brighter option. Orange zest is a little rounder and warmer. Both work.

• Use lemon zest if you want the fruit to read brighter and cleaner.
• Use orange zest if the plums skew grapey or bitter and need a softer nudge.

Bread flour note

This recipe was adjusted to work with bread flour. The payoff is that the cake still holds together under the fruit. The risk is toughness if you overmix. Whisk until combined, then stop.

How much fruit is too much

Use only as many plums as fit in a snug layer with slight overlap.

• If the whole surface is covered, stop.
• Do not keep piling fruit on because you technically still have some left.
• More fruit is not always more virtue. Sometimes it is just pudding with ambitions.

Freezing extra plums

If you have leftover sliced plums, freeze them for another buckle, a compote, or a future lazy-person victory.

1. Spread the wedges on a plate or small sheet pan so they are not touching much.
2. Freeze until firm, about 1 to 2 hours.
3. Transfer to a zip-top freezer bag and store frozen.

This keeps them from freezing into one giant plum asteroid. Vacuum sealing is fine, but not necessary.

Bake time and doneness cues

Most pie-plate versions with a generous layer of fruit will land around 60 minutes.

Look for:

• golden edges
• a center that is set, not liquidy
• a toothpick that comes out mostly clean from a cakey spot

If the top is browning too quickly near the end, tent loosely with foil.

Serving notes

This is excellent warm, at room temperature, or later the same night as a board game snack, which may be the highest form of recipe validation.

The dairy-free label applies to the base recipe as written with plant butter and oat milk. Serving it with vanilla ice cream or whipped cream may change that.