High Protein Sweet Potato Pie (Greek Yogurt Custard)

A high protein sweet potato pie is what happens when you take the classic Southern dessert and swap most of the cream for thick Greek yogurt. You still get that warm cinnamon and nutmeg flavor, but the filling turns out tangy and silky instead of heavy. Roasting the sweet potato first does most of the work here.

Start to finish, this takes about 75 minutes, and I’d call it beginner-friendly. The only real watch-out is baking it just until the center jiggles slightly — a minute too long and the custard goes grainy. Each slice packs 12g of protein, most of it from the Greek yogurt and the two eggs, which is why it holds up as a holiday dessert or even a make-ahead breakfast.

What Is This High-Protein Sweet Potato Pie?

It’s a baked custard pie made from mashed roasted sweet potato, full-fat Greek yogurt, eggs, honey, and maple syrup, poured into a 9-inch unbaked crust and baked at 350°F. The texture lands somewhere between pumpkin pie and cheesecake — creamy and dense, but with a soft set. Flavor-wise you get earthy sweet potato, a hit of vanilla, and gentle spice from cinnamon, nutmeg, and ginger. I make it for Thanksgiving and Christmas, though it’s also good on a random Tuesday when you want dessert that actually keeps you full.

Why You’ll Love This Sweet Potato Pie

A few things convinced me to stop making my old recipe and stick with this one.

• Real protein per slice — 12g per serving from Greek yogurt and eggs, not from a scoop of powder you can taste.
• Naturally sweetened — honey and maple syrup do the job, so there’s no cloying sugar overload.
• Silky, not dense — the yogurt keeps the custard light while still setting firm enough to slice cleanly.
• Simple method — one bowl, a whisk, and a store-bought crust if that’s your mood.
• Make-ahead friendly — it needs at least 2 hours of chilling anyway, so you can bake it the day before.
• Only 227 calories — light enough that a slice doesn’t wreck the rest of your day.

Ingredients for Greek Yogurt Custard Sweet Potato Pie

Most of these are pantry staples, and the only thing you might need to grab is a sweet potato.

For the Filling

• Sweet potato — 1 large (about 12 oz), roasted and mashed to yield exactly 1 cup; measure it, don’t eyeball it.
• Full-fat Greek yogurt — 1 cup; full-fat matters because low-fat versions separate and turn watery in the oven.
• Eggs — 2 large; they set the custard and add protein, so don’t reduce them.
• Honey — 1/4 cup for sweetness and browning.
• Maple syrup — 2 tablespoons; real maple, not pancake syrup, for cleaner flavor.
• Vanilla extract — 1 teaspoon to round everything out.
• Cinnamon, nutmeg, ginger — 1 teaspoon, 1/2 teaspoon, and 1/4 teaspoon; the classic pie spice trio.
• Kosher salt — 1/4 teaspoon; it sharpens the sweetness instead of making it taste salty.

For the Crust

• Unbaked 9-inch pie crust — store-bought or homemade works; whole wheat adds extra fiber if you want it.

Equipment You’ll Need

Nothing exotic here — you probably own all of this already.

• Foil-lined baking sheet — catches the sweet potato drips so you don’t scrub caramelized syrup off a pan later.
• Large mixing bowl — big enough to whisk everything without splashing over the sides.
• Hand mixer or immersion blender — optional but the best way to kill every last sweet potato lump.
• Wire cooling rack — lets air circulate under the pie so the crust doesn’t steam and go soggy.
• Pie shield or aluminum foil — you’ll want it if the crust edges start browning before the filling sets.

How to Make High Protein Sweet Potato Pie

The whole process is really just roast, whisk, bake, chill — four phases and you’re done.

Step 1: Roast and Mash the Sweet Potato

Preheat the oven to 375°F (190°C), prick the sweet potato all over with a fork, and roast it on a foil-lined sheet for 45–50 minutes until completely tender. In a hurry, microwave it on high for 8–10 minutes, turning halfway. Let it cool slightly, then peel and mash until smooth, measuring out 1 cup.

Step 2: Whisk the Custard Filling

Drop the oven to 350°F (175°C). In a large bowl, whisk the mashed sweet potato, Greek yogurt, eggs, honey, maple syrup, vanilla, cinnamon, nutmeg, ginger, and salt until completely smooth. If you spot lumps, hit it with a hand mixer or immersion blender — a lumpy custard stays lumpy after baking.

Step 3: Fill the Crust

Pour the filling into the unbaked crust and smooth the top with a spatula. Don’t press the filling down or tap the pan aggressively; you’re just leveling it.

Step 4: Bake Until Just Set

Bake at 350°F (175°C) for 45–50 minutes, until the center is set but still slightly jiggly when you gently shake the pan. If the crust edges darken too fast, tent them with foil or a pie shield after the first 30 minutes.

Step 5: Cool, Then Chill

Cool on a wire rack for 1 hour to room temperature — the custard keeps firming up as it sits. For clean slices, refrigerate at least 2 hours before cutting. Serve chilled or at room temperature.

What Went Wrong and How I Fixed It

These are the things that tripped me up the first few times I made this.

• Watery filling — usually low-fat yogurt or an under-mashed sweet potato; use full-fat and blend until completely smooth.
• Grainy custard — that’s overbaking; pull it while the center still wobbles slightly and let carryover heat finish the job.
• Burnt crust edges — foil or a pie shield after 30 minutes solves it every time.
• Soggy bottom — pouring hot filling into the crust steams it; let the sweet potato cool first.
• Muted spice — old ground cinnamon and nutmeg lose their punch fast; check your jars before baking.
• Messy slices — cutting too soon is the culprit; 2 hours of chilling is not optional.

What to Serve With Sweet Potato Pie

This pie works as dessert, but it also pulls double duty at brunch.

• Whipped cream — a small dollop adds richness without burying the tangy yogurt flavor.
• Coffee — black or with milk, the bitterness balances the honey and maple.
• Greek yogurt — sounds odd, but a spoonful on a breakfast slice pushes protein even higher.
• Toasted pecans — a scatter of chopped nuts adds crunch the soft custard lacks.
• Fresh berries — raspberries or blackberries cut through the sweetness nicely.
• Chai tea — the spices echo the cinnamon and ginger in the filling.

Pro Tips for the Best Sweet Potato Pie

Small details make the difference between good and memorable here.

• Measure the mash — 1 cup exactly; too much sweet potato and the custard won’t set.
• Roast, don’t boil — roasting concentrates the natural sugars and keeps the mash dry.
• Blend for smoothness — 30 seconds with an immersion blender removes every fiber and lump.
• Chill overnight — flavor deepens and slices come out clean the next day.
• Add protein powder carefully — 1/2 cup vanilla protein powder adds about 3g protein per serving, but drop the honey to 2 tablespoons so it isn’t too sweet.
• Warm the knife — run it under hot water and dry it before each cut for bakery-clean slices.
• Toast the crust — if you like a crisper base, blind-bake it 8 minutes before adding filling.

Easy Variations of Sweet Potato Pie

Once you’ve nailed the base, these are fun to try.

• Pumpkin swap — use 1 cup pumpkin puree instead of sweet potato for a lighter, less earthy flavor.
• Chocolate twist — whisk 2 tablespoons cocoa powder into the filling for a subtle mocha note.
• Coconut version — swap the maple syrup for coconut sugar and add 1/4 teaspoon coconut extract.
• Protein-packed — add 1/2 cup vanilla protein powder and reduce honey to 2 tablespoons.
• Ginger snap crust — press crushed ginger snaps into the pan instead of a standard pastry crust.
• Mini pies — bake in a muffin tin for 25–30 minutes for single-serve portions.

How Long Does Sweet Potato Pie Last?

Because it’s a custard, this pie needs the fridge — counter storage isn’t safe here.

• Refrigerator — cover and store up to 4 days; the flavor actually improves on day two.
• Freezer — wrap individual slices tightly in plastic wrap and foil, then freeze up to 2 months.
• Thawing — move slices to the refrigerator overnight; the texture comes back almost perfectly.
• Make ahead — bake up to a day before serving and chill overnight for the cleanest slices.
• Room temperature — safe for up to 2 hours at parties, then back in the fridge.

How to Reheat Sweet Potato Pie

This pie is great cold, but if you prefer it warm, here’s the safest way.

• Oven — 300°F (150°C) for 8–10 minutes; the gentlest method and it keeps the crust crisp.
• Microwave — 20–30 seconds on medium power; fast, but the crust softens quickly.
• Air fryer — 300°F (150°C) for 4–5 minutes; good middle ground if the slice fits flat.
• Toaster oven — 300°F (150°C) for 6–8 minutes; watch it closely since small ovens run hot.

High-Protein Sweet Potato Pie FAQs

Can you make sweet potato pie ahead of time?

Yes, and it’s actually better that way. Bake it up to a day in advance and refrigerate overnight — the custard sets firmer and the spices mellow into the filling.

How long does sweet potato pie last in the fridge?

Covered and refrigerated, it keeps for up to 4 days. Past that, the crust starts to soften and the filling gets weepy.

Can I freeze it?

Individual slices freeze well for up to 2 months when wrapped tightly in plastic wrap and foil. Thaw overnight in the refrigerator rather than at room temperature.

Is this high protein sweet potato pie healthy?

It’s a dessert, but a lighter one at 227 calories and 12g of protein per slice. The protein comes from Greek yogurt and eggs, and the sugar is mostly from honey and maple syrup.

Why is my filling still jiggly after baking?

A slight wobble in the center is what you want — it firms up as it cools for an hour, then finishes setting in the fridge. If it’s soupy after chilling, you likely used too much mashed sweet potato or low-fat yogurt.

Can I use canned sweet potato instead of roasting one?

You can, and it’s a solid shortcut. Use 1 cup of plain canned puree, not the sweetened pie filling version, and drain off any excess liquid before measuring.

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