Cinnamon Sweet Potato Custard

This spoonable baked dessert combines mashed sweet potato with warm spice and a modest maple sweetness. Baking it in a water bath gives the egg custard gentle, even heat, so the edges do not become firm before the center is ready. It may be served barely warm or thoroughly chilled.

Ingredients

1 pound orange sweet potatoes
2 large eggs
1 cup whole milk
1/4 cup pure maple syrup
1 teaspoon vanilla extract
1 teaspoon ground cinnamon
1/4 teaspoon ground ginger
1/8 teaspoon ground nutmeg
1/4 teaspoon fine salt
1 teaspoon butter, for the dishes
2 tablespoons chopped toasted pecans, optional

Equipment

You need a sheet pan, fork, blender or food processor, four 8-ounce ramekins, roasting pan, kettle, and instant-read thermometer.

Yield and timing

Makes 4 servings. Allow about 55 minutes to roast the potatoes, 10 minutes to mix, and 35 to 42 minutes to bake the custards at 325°F.

Method

Heat the oven to 400°F. Pierce the sweet potatoes and roast on a sheet pan until a knife slides through the thickest part without resistance, 45 to 55 minutes. When cool enough to handle, remove the skins. Measure 1 1/2 cups packed flesh. Reduce the oven to 325°F.
Butter the ramekins and place them in the roasting pan. Blend the sweet potato, eggs, milk, maple syrup, vanilla, cinnamon, ginger, nutmeg, and salt until completely smooth. Scrape down the container once so no fibrous pieces remain.
Divide the mixture among the ramekins. Pour hot water into the roasting pan until it reaches halfway up their sides. Keep water out of the custard.
Bake for 35 to 42 minutes. The outer inch should be set and the center should wobble gently as one unit, not ripple like liquid. For a precise safety check, the center should reach at least 160°F.
Lift the ramekins from the bath and cool for 20 minutes. Add pecans just before serving, or refrigerate the custards uncovered until cool and then cover them.

Texture cues and fixes

A smooth top and creamy center indicate gentle baking. Bubbles around the edge or a grainy texture mean the custard became too hot; check it early and use hot, not vigorously boiling, water in the bath. If the potato flesh measures short, roast another small potato rather than increasing the milk. Thorough blending matters because sweet-potato fibers otherwise form small strands.

Substitutions and storage

Unsweetened oat milk can replace dairy milk, though the custard will be slightly softer. Honey can replace maple syrup in the same amount. For a nut-free dessert, omit the pecans and add a spoonful of yogurt at serving. Refrigerate within 2 hours and keep covered at 40°F or below for up to 4 days. Do not freeze; thawed egg custard can separate and release water. The roasted sweet-potato flesh can be prepared one day ahead and refrigerated before blending.

Cinnamon Sweet Potato Custard