Recipe for Sweet Potato Pie Using Condensed Milk: Rich Custard in a Flaky Crust

This sweet potato pie delivers a flaky crust filled with velvety custard, enhanced by the richness of condensed milk.

I’ve perfected a method that ensures a smooth, spiced filling with just the right amount of sweetness. The result is a dessert that’s both comforting and impressive.

Ingredients for Recipe for Sweet Potato Pie Using Condensed Milk

A perfect pie starts with quality basics: flaky crust, rich condensed milk, and the right spices.

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The crust demands attention to detail. King Arthur Flour is ideal for consistent results, and European-style butter (like Plugrá) delivers superior flakiness. Ensure butter stays ice-cold throughout the process—this is non-negotiable for that promised flaky texture. Sweet potatoes should be orange-fleshed varieties (like Beauregard) for optimal color and moisture content in the filling.

Substitutions require caution here. Coconut milk at full-fat can replace evaporated milk in a pinch, though flavor will shift slightly. No cinnamon? Pumpkin pie spice at equal volume works, but the profile won’t be as nuanced. The condensed milk is irreplaceable for texture—do not attempt with regular milk plus sugar. For the crust, shortening at half the butter quantity yields a flakier result if preferred.

Store uncut sweet potatoes in a cool, dark place for up to 2 weeks. The pie keeps at room temperature for 2 days or refrigerated for 5 days. Freeze slices wrapped tightly for up to 3 months—thaw overnight before serving for best texture.

Step-by-Step Instructions for Sweet Potato Pie with Condensed Milk

Master the technique for a velvety custard filling encased in a perfectly flaky crust.

Step 1: Prepare the Pie Crust

In a food processor, pulse the 2 cups All-Purpose Flour, 1 tsp Granulated Sugar, and 0.5 tsp Salt until combined. Add the 0.75 cup Unsalted Butter (chilled and cubed) and pulse until the mixture resembles coarse crumbs with pea-sized butter pieces visible.

With the processor running, drizzle in the 0.25 cup Ice Water 1 tablespoon at a time until the dough just comes together. It should hold when pressed but not be sticky. Turn the dough onto a lightly floured surface and shape into a disk.

Wrap in plastic and refrigerate for 1 hour—this relaxes the gluten and prevents shrinking during baking. For extra flakiness, I always use ice-cold ingredients and handle the dough minimally.

Step 2: Cook and Mash the Sweet Potatoes

Peel and cube the 2 lb Sweet Potatoes into even pieces. Place in a pot of boiling water and cook for 15-20 minutes until fork-tender. Drain thoroughly—any excess moisture will make your filling watery.

While still warm, mash the sweet potatoes until completely smooth. You should have about 4 cups of puree. For the silkiest texture, I recommend using a potato ricer or food mill. Let the puree cool slightly before mixing with other filling ingredients to prevent curdling.

Step 3: Make the Custard Filling

In a large bowl, whisk together the sweet potato puree, 1 can Sweetened Condensed Milk, 1 can Evaporated Milk, 2 whole Large Eggs, 0.75 cup Light Brown Sugar, 1 tsp Vanilla Extract, 1 tsp Ground Cinnamon, 0.5 tsp Ground Nutmeg, 0.25 tsp Ground Ginger, and 2 tbsp Pure Maple Syrup until completely smooth.

The brown sugar should be packed tightly when measured. I always taste the filling at this stage and adjust spices if needed—the nutmeg should be prominent but not overpowering. The mixture will be thin but will thicken as it bakes.

Step 4: Assemble and Blind Bake the Crust

On a lightly floured surface, roll the chilled dough into a 12-inch circle. Transfer to a 9-inch pie dish, trim the edges to ½-inch overhang, then crimp decoratively. For extra flakiness, I brush the crust with a bit of the evaporated milk before baking.

Prick the bottom all over with a fork and freeze for 15 minutes. Blind bake at 375°F for 15 minutes with pie weights or dried beans, then remove weights and bake for another 5-7 minutes until light golden brown.

Step 5: Bake the Pie to Perfection

Pour the filling into the pre-baked crust. Bake at 350°F for 50-60 minutes until the edges are set but the center still has a slight wobble—it will continue to set as it cools. If the crust begins to brown too quickly, tent the edges with foil.

Cool the pie completely on a wire rack for at least 2 hours before slicing. This cooling time is crucial for the custard to set properly. Serve at room temperature for the best texture, with the crust maintaining its flaky layers and the filling offering a rich, creamy consistency.

Common Mistakes When Making Great recipe for sweet potato pie using condensed milk

Overworking the Dough

Handle your crust dough as little as possible after adding water. Overmixing develops gluten, which makes your crust tough instead of flaky. I stop the processor as soon as the dough clumps together—usually after 30-45 seconds of pulsing. 💡

Skipping the Chill

Refrigerating the dough for at least 1 hour is non-negotiable. This rest period allows the gluten to relax and the butter to firm up, preventing shrinkage during baking. I’ve learned the hard way that skipping this step ruins the texture.

Watery Sweet Potatoes

After boiling, drain your sweet potatoes thoroughly and press them gently in a colander. Even a little extra moisture can make your filling runny. For the best results, I use a potato ricer to ensure a smooth, dry puree.

Underbaking the Crust

Blind baking the crust until it’s light golden brown prevents a soggy bottom. If it looks pale after 15 minutes, bake it for another 5-7 minutes before adding the filling. I always check for a firm, dry surface.

Overbaking the Filling

The center should have a slight wobble when you take it out of the oven—it will set as it cools. Baking it until fully firm can cause cracks and a dry texture. I start checking at 50 minutes for that perfect jiggle. 🔥

Cutting Too Soon

Resist the urge to slice into your pie right away. Cooling for at least 2 hours lets the custard set completely. I’ve ruined many a pie by cutting too early, so now I plan ahead and let it rest.

Frequently Asked Questions