Ingredient Guides
Best Fillings for Croissants, Donuts and Pastries
Short answer
Fillings that go into the oven must be bake-stable — they hold shape and don't boil out. Fillings added after baking can be spreads or creams, chosen for flavour and piping texture. As a starting point: 20–25 g per croissant, 25–35 g per donut, 15–20 g per filled cookie, and a 2–3 mm layer in cakes.
Table of contents
The three families of filling
Bake-stable fillings
Formulated with starches and hydrocolloids so they hold their shape through the oven. Use them whenever the filling is enclosed in dough and baked: filled croissants, danishes, brioche, cookies with a baked centre.
They stay soft after cooling and don't dry the crumb around them, which is what separates them from a plain jam.
Spreads and creams
Fat-based, high flavour, no bake stability. Added after baking, they carry the strongest nut and chocolate character and pipe cleanly at 22–26 °C.
Ripples and variegates
Thick, fluid preparations built to be swirled through a base — gelato, cheesecake, whipped ganache, buttercream. Often with inclusions such as biscuit, cookie pieces or crisped cereal.
Nine out of ten filling failures are simply a spread used where a bake-stable filling belonged, or vice versa.
By pastry: what to use and how much
Weigh the first pieces of every new item until the dose is in your hands. Filling variance is one of the biggest silent food-cost leaks in a small bakery — 5 g of drift per croissant across 400 pastries is 2 kg a month.
Which flavours actually sell
Menu-wise, the reliable pattern is two familiar fillings plus one signature. Hazelnut and dulce de leche or custard cover the familiar side; pistachio, lemon, crème brûlée or a speculoos spread give you the item people photograph.
Fruit fillings sell well in warm months but need more care: they carry water, so they soften pastry faster and need shorter display times.
Stopping leaks, soggy bases and shrinkage
Follow along
0/5 doneIf a filling boils out in the oven, it's almost always a water-based product being used where a bake-stable one is needed.
Storage and service
Frequently asked questions
Written by
Crave Bake Supply Team
We supply professional European baking ingredients to bakeries, pastry shops and home bakers from our Miami warehouse. Our guides come from the questions our customers ask us every week. Ask us anything.
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