Stovetop Fruit Filling for Pies and Crumbles
This is the foundation for any double-crust pie, galette, or fruit-based crisp. By cooking the filling on the stovetop first, you avoid the common pitfall of a soggy bottom crust and ensure the fruit is uniformly sweetened.
Consistency is controlled by the thickener
Different fruits require different amounts of starch. Berries are watery and need more; apples are firmer and need less.
- heavy-bottomed saucepan
- silicone spatula
- small bowl for slurry
- whisk
What goes in.
- 4 cupsfresh or frozen fruit (peeled and sliced if necessary)
- 2/3 cupgranulated sugar
- 3 tbspcornstarch
- 3 tbspcold water
- 1 tbsplemon juice
- 1/4 tspfine sea salt
Activating the starch
Always dissolve your cornstarch in cold liquid before adding it to a hot pan. If you add dry starch directly to hot fruit, it will clump into unappetizing pockets of paste.
The method.
Combine fruit and sugar
Place the fruit, sugar, lemon juice, and salt into the saucepan over medium heat. Stir until the fruit begins to release its liquid.
Prepare the slurry
While the fruit heats, whisk the cornstarch and cold water in a small bowl until completely smooth.
Incorporate the thickener
Once the fruit liquid is simmering, slowly pour the slurry into the pan while stirring constantly. The mixture will look cloudy at first.
Cook until clear
Keep stirring over medium-low heat for about 2 minutes. The liquid will transform from cloudy to glossy and translucent; this indicates the starch has fully cooked.
Cool completely
Pour the filling onto a flat baking sheet to cool. Do not fill a pie crust with hot filling, as it will melt your pastry fat and prevent a flaky finish.
Other turns to take.
Spiced Filling
Add one teaspoon of ground cinnamon or a pinch of nutmeg during the first step.
Citrus-Forward
Replace one tablespoon of the water in the slurry with fresh orange juice for brightness.
When it doesn't go to plan.
If your fruit is particularly tart, increase the sugar by two tablespoons.
Frozen fruit will release more water than fresh; be prepared to simmer for an extra minute to reach the desired thickness.
Always use a heavy-bottomed pan to prevent the high sugar content from scorching at the base.
The ones that keep coming up.
Can I use flour instead of cornstarch?
You can, but you will need to double the amount and cook the filling for longer to remove the raw flour taste. Cornstarch results in a clearer, glossier finished filling.
How do I know if it's thick enough?
Drag your spatula across the bottom of the pan; if the trail left behind takes a moment to fill back in, the consistency is correct.