I love pretty desserts and this Blackberry Custard Pie is as pretty as they come. With a press in pie crust & custard made right in the blender, it has just 10 minutes of prep time. This easy recipe is low carb, keto, gluten-free, grain-free, sugar-free, and Trim Healthy Mama friendly.
One of my favorite things is my friend Kristen's Pear Pie. A few months ago I made a healthy version of that but, alas, it hasn't been too popular. I think the fact that it is an S Helper for Trim Healthy Mamas and has 10 net carbs for my low carb readers has kept it from being one of my top recipes. I decided to make that custard pie with berries to make it an S and low carb. As always it is sugar and gluten free.
No Roll Pie Crust for Custard Pie
Sometimes I make custard pies with crust and sometimes I make them without. I felt like a crust when I made this last week. I also shared it with a group of my girlfriends and it was a hit. And I'm the only low carb, trim healthy mama out of our group. Those ladies have been my taste testers more than once. They usually do so happily.
This is an easy almond flour pie crust that mixes up in the food processor and then gets pressed right into the pie plate with your fingers. No rolling pin required!
Custard Pie Crust Ingredients:
Almond Flour - I’ve come to prefer almond flour in baked goods. It has a mild flavor and gives a tender crumb in cakes, cookies, and biscuits.
Coconut Flour - Just a little bit of coconut flour goes a long way. Coconut flour helps to balance the oiliness of almond flour since it is naturally drier and absorbs more liquid than other alternative flours.
Cold Butter - Using cold butter helps the crust mimic the flakiness of a traditional pie crust. And butter has a much nicer flavor than shortening.
Cold Water - Same as above. We use cold ingredients for the pie crust to help them get nice and flakey while baking.
How do you keep a pie crust from getting soggy?
One of the easiest ways to do this is to blind bake it. This crust doesn't need pie weights, just prick with a fork a few times and bake it for 10 minutes. This helps it to not get soggy from the custard and the berries.
Can I use other types of berries in the Easy Custard Pie Recipe?
Of course! I do recommend using frozen berries. When you use frozen berries the custard gets a chance to begin to set before the berries release all their juices.
Custard Pie Filling Ingredients:
Frozen Blackberries or other Frozen Berries - I use frozen berries in this custard pie so that the custard gets a chance to begin to set before the blackberries release their juices. Raspberries and blueberries work very well, as well as a combination. Strawberries are a bit big unless you can find the frozen slices without added sugar.
Eggs - Eggs are the binder in this custard and cannot be substituted.
Softened Butter - I use softened butter for the custard so that it can easily mix into the eggs.
Sugar-Free Sweetener - I like to use a blend of xylitol, erythritol, and stevia in my recipes. You can purchase this pre-mixed from the Trim Healthy Mama website or mix your own according to my recipe. By using a combination of sugar alcohols and stevia you can use half the amount required of regular sugar. Since these sweeteners can be more expensive this helps with my food budget.
Vanilla - With the price of vanilla having gone up drastically the last few years I decided to try a Mexican vanilla extract and have been happy with the results.
Almond Flour - Using a little bit of almond flour in the custard helps it to thicken.
How to Make Custard?
Making a baked custard using my method is very easy. Simple blend eggs, butter, sweetener, vanilla, and almond flour. Once you do that you can pour it into a pie plate (with or without a crust) or individual ramekins and bake them.
In a hurry? This Keto Cheesecake Fluff can be made in just 5 minutes!
Love blackberries? Try my Keto Blackberry Cheesecake next!
And don't miss out on this Baked Custard with Lemon.
- 10 oz frozen blackberries
- 3 eggs
- 4 tbsp butter softened
- ½ cup Joy Filled Eats Sweetener (or see alternatives in recipe notes)
- 1 tbsp vanilla
- ¼ cup almond flour
- Preheat oven to 350.
- Put the almond flour, coconut flour, and butter in a food processor and pulse until crumbs form. Add the water and pulse until it comes together in a dough. Press into the bottom and up the sides of a pie plate. Prick the bottom with a fork. Bake for 10 minutes.
- Remove from the oven and scatter the blackberries over the crust.
- Combine the rest of the ingredients in a blender and blend until smooth. Pour the custard over the berries.
- Bake for 40-50 minutes until the center isn't jiggly and the pie is golden brown. Cool completely and then chill in the fridge for a few hours before serving.
Originally Published August 21, 2016. Revised and Republished April 10, 2019.