How to Make High-Protein Custard with Ultra-Filtered Milk: A Creamy, Egg-Enriched Dessert Recipe

Custard is one of those timeless desserts that feels both indulgent and comforting. But traditional recipes rely on heavy cream and whole milk, which can push calorie and fat content high without adding much nutritional value. What if you could enjoy that same velvety texture and deep vanilla flavor while also loading up on protein? Enter ultra-filtered milk—a game-changer for anyone who wants a healthier custard that doesn't compromise on taste.

Ultra-filtered milk naturally contains about twice the protein of regular milk and half the sugar, thanks to a gentle filtration process that concentrates the protein-rich components. When you use it as the base for a homemade custard, you get a dessert that supports muscle recovery, keeps you full longer, and fits seamlessly into a high-protein lifestyle. In this guide, we’ll walk through a foolproof stovetop method and share how to incorporate products like CORE POWERM VANILLAE or CHOCOLATE ULTRA-FILTERED MILK to create custom flavor variations.

Why Ultra-Filtered Milk Is the Perfect Custard Base

The secret to a silky custard is the balance between eggs, milk, and gentle heat. Regular milk has about 8 grams of protein per cup, but ultra-filtered milk delivers around 13 grams per cup, giving your custard a thicker, more stable body without needing extra thickeners. The higher protein content also helps the custard set more firmly, which is especially useful if you plan to unmold it or use it as a pie filling.

Because ultra-filtered milk has less lactose than standard milk, many people who are mildly lactose intolerant can enjoy it without discomfort. That means your custard can be a crowd-pleaser even among guests with sensitive stomachs. Plus, the naturally reduced sugar lets you control sweetness yourself—perfect for those following lower-sugar diets or simply wanting a cleaner dessert.

• For the richest texture, use whole or 2% ultra-filtered milk—both work beautifully.
• If you want an extra protein punch, blend in a scoop of CORE POWERM VANILLAE for a creamy vanilla boost.

Ingredients for a Classic High-Protein Custard

This recipe is sturdy enough for stovetop custard cups or a baked version. You’ll need: 2 cups of ultra-filtered milk (CHOCOLATE ULTRA-FILTERED MILK or CHOCOLATE 14oz ultra-filtered milk work well if you want a chocolate variation), 4 large egg yolks, 2 whole eggs, 1/3 cup maple syrup or honey (adjust to taste), 1 teaspoon vanilla extract, and a pinch of salt. If you have CORE POWER ELITE VANILLA on hand, you can replace half a cup of milk with it for an even thicker shake-inspired custard.

For a classic vanilla custard, stick with FAT FREE ULTRA-FILTERED MILK or 2% REDUCED FAT 14oz ultra-filtered milk. The fat content affects mouthfeel, so choose based on your preference. Whole milk yields the creamiest result, but even the fat-free version delivers a surprisingly lush custard thanks to the protein structure.

• Eggs at room temperature blend more smoothly, so take them out 15 minutes ahead.
• A fine-mesh strainer is your best friend—it removes any cooked egg bits for a flawless finish.

Step-by-Step Stovetop Custard Method

Start by gently warming your ultra-filtered milk in a saucepan over medium heat until small bubbles appear around the edges—do not boil. While the milk heats, whisk together the eggs, egg yolks, and sweetener in a separate bowl until pale and slightly thickened. Slowly drizzle about a cup of the hot milk into the egg mixture, whisking constantly to temper the eggs. This prevents them from scrambling when you combine everything.

Pour the egg-milk mixture back into the saucepan and set over low heat. Stir continuously with a wooden spoon or heatproof spatula, scraping the bottom and corners. After 5–8 minutes, the custard should coat the back of the spoon. Remove from heat immediately, stir in vanilla and salt, and strain into a clean bowl. Divide among ramekins and refrigerate for at least 2 hours until fully set.

• Low and slow is the golden rule—rushing high heat will curdle the eggs.
• If you prefer a baked custard, pour the mixture into a water bath and bake at 325°F for 35–40 minutes.

Flavor Variations Using Fairlife Products

One of the best things about this recipe is how easily it adapts. Replace half the milk with CORE POWERC HOCOLATE for an intense chocolate custard that’s perfect for chocoholics. Or use CORE POWER ELITE STRAWBERRY to create a fruity pink custard that kids love. The added collagen and protein from these shakes make each serving a post-workout treat or a midday protein boost.

If you want a lighter version, swap the egg yolks for one extra whole egg and use 2% REDUCED FAT 14oz ultra-filtered milk. The custard will be slightly less rich but still creamy and satisfying. Top with fresh berries or a sprinkle of cinnamon for extra flavor without added sugar.

• For a dairy-free option, note that ultra-filtered milk is still dairy—but the reduced lactose often makes it tolerable.
• Leftover custard keeps for up to 3 days in the fridge; stir before serving if it separates slightly.

Tips for Custard Perfection Every Time

A thermometer makes custard foolproof: aim for 170–175°F (77–80°C). At this temperature, the eggs thicken without curdling. If you don’t have a thermometer, watch for the spoon-coating test, but practice will teach you the right consistency. Another common issue is a skin forming on top—cover the finished custard with plastic wrap pressed directly onto the surface before chilling.

Because ultra-filtered milk is already thick, you may need to stir a little longer than with regular milk. Be patient and keep the heat low; the reward is a dessert that feels luxurious but aligns with your health goals. Whether you enjoy it warm or cold, this high-protein custard is a satisfying way to end any meal.

Making your own high-protein custard with ultra-filtered milk is easier than you think and opens up endless flavor possibilities. Whether you stick with classic vanilla or experiment with chocolate or strawberry variations, this dessert proves that healthy eating can still feel special. Give it a try tonight—grab a bottle of WHOLE ULTRA-FILTERED MILK or your favorite Core Power shake and start whisking your way to a better-for-you custard.