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Why This Recipe Works
- Double-layer flavor: Sweet potato brings caramel sweetness while collards add grassy depth—together they taste like sweet-potato-casserole-meets-gingerbread.
- Silky texture: Blending the greens into the custard eliminates fibrous bits; you’ll never know vegetables are hiding inside.
- Make-ahead magic: Flavors meld overnight, so bake Sunday, serve Monday, and you’re a holiday hero with zero day-of stress.
- Buttermilk crust: Extra-tender thanks to cultured acidity; browns to a deep mahogany that screams “celebration.”
- Warm spice trio: Cinnamon, cardamom, and a whisper of cayenne honor the sweet-potato pies of the Deep South with a gentle kick.
- Freezer-friendly: Slice, wrap, freeze; thaw overnight for a taste of history any day of the year.
Ingredients You'll Need
Every ingredient below was sold at Dr. King’s neighborhood markets on Auburn Avenue in the 1960s—proof that nourishing food need not be fancy. Choose organic when possible to honor the earth that sustained generations of Black farmers.
For the Buttermilk Crust
- 2 ½ cups (315 g) all-purpose flour—use a low-protein brand like White Lily for feather-light flakes.
- 1 Tbsp granulated sugar—aids browning without overt sweetness.
- 1 tsp fine sea salt
- 1 cup (225 g) cold unsalted butter, cubed—freeze 15 min before using to lock in layers.
- ½ cup cold full-fat buttermilk—if you only have milk, add 1 ½ tsp lemon juice and rest 10 min.
- 1 tsp apple-cider vinegar—heightens tang and tempers gluten.
For the Filling
- 2 medium orange-fleshed sweet potatoes (about 1 ½ lb)—Jewel or Beauregard varieties bake up candy-sweet.
- 1 packed cup finely chopped collard greens (about 3 oz)—look for dark, firm leaves; avoid yellowing edges.
- 3 large eggs + 2 yolks—extra yolks equal custardy richness.
- 1 cup (200 g) light brown sugar—adds molasses undertones that play beautifully with greens.
- ½ cup (120 ml) heavy cream—creates silky mouthfeel; swap with coconut cream for dairy-free.
- ¼ cup (60 ml) sorghum or molasses—the smoky backbone of vintage Southern pies.
- 3 Tbsp bourbon—optional but highly recommended; evaporation leaves vanilla-wood aroma.
- 2 tsp ground cinnamon
- ¾ tsp ground cardamom
- ¼ tsp ground nutmeg
- ⅛ tsp cayenne pepper—just enough to tingle, not burn.
- ½ tsp fine sea salt—amplifies sweetness, tames bitterness of greens.
- 2 Tbsp cornmeal—traditional thickener that lends subtle crunch.
How to Make Martin Luther King Jr Day Sweet Potato and Collard Green Pie
Roast & Steam
Heat oven to 400 °F. Scrub sweet potatoes, prick with fork, place on foil-lined sheet. Roast 45 min until syrupy sugars bubble. Meanwhile, bring ½ cup water to simmer in a medium pot. Add chopped collards, cover, and steam 4 min until bright emerald—this tames bitterness without mushiness. Drain, squeeze dry in kitchen towel, and cool completely.
Make the Crust
In a wide bowl whisk flour, sugar, salt. Toss butter cubes to coat. Using fingertips, snap each cube into thin shards—aim for chickpea-size flats. Drizzle buttermilk + vinegar over; toss with fork until ragged clumps form. Turn onto parchment, press into 6-inch rectangle, fold like a letter (this creates layers), wrap, chill 30 min.
Roll & Blind Bake
Lower oven to 375 °F. Roll dough to 12-inch circle, transfer to 9-inch deep-dish plate. Trim leaving ½ inch overhang, fold under, crimp. Dock bottom with fork. Chill 15 min. Line with parchment and fill with pie weights or dried beans. Bake 18 min until edges tan. Remove weights, bake 5 min more. Brush inside with egg white for moisture barrier; cool on rack.
Puree the Greens
Slip roasted sweet potatoes from skins (should yield 2 cups). In high-speed blender combine potatoes, steamed collards, eggs, yolks, brown sugar, cream, sorghum, bourbon, spices, salt, and cornmeal. Blitz 45 seconds until silk-smooth—no visible flecks. The mixture thickens to melted milk-shake consistency.
Fill & Bake Low
Pour filling into warm crust—this jump-starts bottom cooking and prevents sogginess. Reduce oven to 325 °F. Bake 48-52 min until edges puff and center jiggles like set Jell-O when nudged. If crust browns too quickly, tent with foil strip. Pie finishes setting as it cools.
Cool & Cure
Rest pie on wire rack 2 hours—steam escaping prevents weeping. Refrigerate at least 4 hours or up to 3 days; flavors integrate and collabs the way communities do when given time. Serve chilled or at cool room temp with softly whipped cream spiked with more bourbon.
Expert Tips
Keep It Cold
Warm butter = tough crust. If kitchen exceeds 74 °F, chill bowl + flour 15 min before cutting butter.
Leaf-to-Stem
Collard stems are edible; thinly slice and sauté for omelets—zero waste honors resourceful grandmas.
Crimp Confidence
Use two knuckles and thumb for even waves; chant “I have a dream” as you work—rhythm equals consistency.
Check Doneness Early
Over-baking causes cracks. When center is still wobbly but no longer liquid, pull it—residual heat finishes the job.
Color Guard
If filling grays, add pinch of baking soda to collards while steaming—chlorophyll stays vibrant.
Transport Tip
Slide pie into cast-iron skillet for travel; the heavy lid prevents sliding and keeps crust crisp.
Variations to Try
- Maple-Pecan Crust: Swap sorghum for maple syrup and press ½ cup toasted pecans into crust edges before blind-bake.
- Vegan Version: Use coconut oil crust, flax eggs (2 Tbsp flax + 5 Tbsp water per egg), full-fat coconut milk, and maple syrup.
- Spiced Rum Raisin: Soak ½ cup golden raisins in ¼ cup dark rum; fold into filling before baking.
- Savory-Sweet Hand Pies: Halve sugar, add ½ cup grated sharp cheddar, bake as 12 three-inch turnovers for brunch.
- Gingersnap Crust: Replace buttermilk crust with 2 cups crushed gingersnaps + 5 Tbsp melted butter; press, no blind-bake needed.
Storage Tips
Room Temp: Up to 4 hours in cool kitchen; loosely tent foil to keep crust from drying.
Refrigerate: Wrap whole pie or slices in plastic, then foil; keeps 5 days. Let sit 30 min at room temp before serving to revive creamy texture.
Freeze: Chill pie solid, wrap in plastic + foil + freezer bag; freeze up to 3 months. Thaw overnight in fridge, then 1 hour on counter. Warm 10 min at 300 °F for fresh-baked aroma.
Make-Ahead: Roast sweet potatoes and steam greens up to 3 days early; store separately in fridge. Crust dough can be frozen 1 month; thaw overnight in refrigerator before rolling.
Frequently Asked Questions
Martin Luther King Jr Day Sweet Potato and Collard Green Pie
Ingredients
Instructions
- Roast: Prick sweet potatoes, bake 45 min at 400 °F until caramelized.
- Steam: Simmer collards 4 min, drain, cool, squeeze dry.
- Crust: Blend flour, sugar, salt, butter. Add buttermilk + vinegar, fold, chill 30 min. Roll, blind-bake 18 min at 375 °F.
- Filling: Blend roasted potatoes, greens, eggs, yolks, brown sugar, cream, sorghum, bourbon, spices, cornmeal until smooth.
- Bake: Pour into hot crust, bake 50 min at 325 °F until center jiggles like Jell-O.
- Cool: Rest 2 hours, chill 4 hours or overnight. Serve with whipped cream.
Recipe Notes
Pie tastes even better on day two. Store covered in refrigerator; bring to room temp 30 min before serving for best flavor.
