Hula Pie is, mechanically, a no-bake ice cream pie. What makes it Duke’s rather than generic is the specific combination: macadamia nut ice cream (not vanilla, not chocolate), a chocolate Oreo crust (not graham cracker, not pastry), and warm hot fudge poured at the moment of serving so the temperature contrast hits immediately.

All three elements matter. Graham cracker crust tastes fine but reads as bland next to macadamia nut ice cream — the Oreo crust’s mild cocoa flavor amplifies the chocolate in the fudge and creates a through-line. Vanilla ice cream loses the macadamia nut character that makes the dessert distinctly Hawaiian rather than just a generic ice cream pie. And cold or room-temperature hot fudge, poured in advance, just looks brown on a plate — the warm fudge is what makes the dessert dramatic, what makes it feel like a restaurant plated dessert rather than something pulled from your home freezer.

1. Freeze the crust before filling; freeze the filled pie overnight

There are two stages of freezing in this recipe, and both matter. The empty crust must be fully frozen (20 minutes minimum) before the ice cream goes in — a soft crust will absorb liquid from the slightly-melted ice cream as it’s packed and turn grainy and soggy. The assembled pie must freeze for at least 4 hours, ideally overnight, so the ice cream bonds with the crust and slices cleanly. A pie assembled and sliced the same day will have a crust that separates from the ice cream and edges that smear. Made a day ahead, the pie plates like a restaurant dish.

2. The hot fudge must be hot when it hits the frozen pie

The fudge should be poured over the slice within seconds of ladling — the warm sauce contacting the frozen ice cream surface is the moment the dessert transforms from good to extraordinary. The visual effect (fudge flowing down a frozen wedge, ice cream beginning to melt at the edges) is part of the dish. If the fudge cools to room temperature on the plate before the first bite, the contrast is gone. Pour last, serve immediately.

Häagen-Dazs Macadamia Nut is the closest commercial match to what Duke’s serves. The macadamia pieces are chunky and real, the vanilla base is dense, and the cream quality is high enough to stay scoopable at the right moment rather than going immediately liquid.

Dreyer’s/Edy’s Macadamia Nut Fudge is a good budget option with a milder macadamia flavor and a ribbon of chocolate swirled through.

If neither is available: any full-fat vanilla bean ice cream plus 3/4 cup roughly chopped roasted macadamia nuts, folded in when the ice cream is just barely scoopable. The macadamia flavor is less prominent but the textural effect is the same.

Whatever you use, avoid reduced-fat or slow-churned ice cream. Higher water content means a foamy, icy texture once frozen into a crust rather than the dense, tight scoop Duke’s serves.

The homemade hot fudge in this recipe takes 8 minutes. It has deeper cocoa flavor, a slightly thinner pourable consistency, and keeps refrigerated for a week.

Jarred hot fudge works. Stonewall Kitchen’s Dark Chocolate Hot Fudge and Smucker’s Classic Hot Fudge are both reliable. The one to avoid is Smucker’s Magic Shell — it hardshells on contact with cold ice cream, which creates a shell rather than a sauce and ruins the temperature-contrast effect.

Whichever you use: the sauce must be genuinely warm, not just room temperature. If you’re reheating jarred fudge, heat it in a small saucepan over low heat or in a microwave-safe bowl in 20-second increments, stirring between each, until it flows freely off a spoon.

Kona Coffee Hula Pie: Add 1 tablespoon instant espresso powder to the hot fudge when making it, or buy coffee-flavored hot fudge. The coffee-chocolate combination against macadamia nut ice cream evokes Kona coffee, Hawaii’s most famous agricultural product. Add a scatter of cacao nibs on top instead of toasted coconut.

Haupia–Macadamia Pie: Swap the Oreo crust for a macadamia shortbread crust (2 cups macadamia nuts + 1/4 cup sugar + pinch salt, processed to a damp crumb, pressed in and frozen), and use coconut ice cream as the base with macadamia nuts folded in. Haupia is the traditional Hawaiian coconut pudding; this version leans further into the Hawaiian flavor profile.

Mini Individual Pies: Make 8 individual Hula Pies in wide-mouth 8 oz Mason jars or individual ramekins — press the crust into the bottom and a little up the sides, pack with ice cream, freeze. Serve each jar directly with fudge poured in at the table. Ideal for parties where a full pie would be difficult to slice cleanly.

• Copycat Joe’s Stone Crab Key Lime Pie — the other iconic make-ahead restaurant pie with a graham-and-chill technique: tart, no-bake, and built on the same logic of freezing firm before slicing clean.
• Copycat Mastro’s Butter Cake — the steakhouse dessert people most often order “just to split,” and a useful contrast: warm and gooey where Hula Pie is cold and dense.
• Copycat Cheesecake Factory Oreo Cheesecake — same Oreo-crust foundation taken in a baked-cheesecake direction, if you love the chocolate-cookie base here.
• Copycat Dairy Queen Blizzard — the fastest route to a dense ice-cream-and-mix-in dessert when you don’t have hours to freeze a full pie.