Can You Freeze Pesto?
Fresh or store-bought basil pesto, any variety.
The Short Answer
Yes, you can freeze pesto. Yes. Pesto freezes exceptionally well. Ice cube trays are the best method.
Freezer Storage Time
Source: USDA FoodKeeper | Last verified: March 30, 2026 | Our methodology
How to Freeze Pesto
- Spoon pesto into ice cube trays.
- Drizzle a thin layer of olive oil on top of each cube (prevents browning).
- Freeze until solid, then pop out cubes and transfer to a freezer bag.
- Alternatively, freeze in thin layers in freezer bags laid flat.
Texture and Quality Changes
Frozen pesto retains excellent flavor. The color may darken slightly (the basil oxidizes) but the taste remains vibrant. The olive oil layer on top helps prevent browning.
How to Thaw Pesto Safely
Add frozen pesto cubes directly to hot pasta, soups, or sauces. They melt in seconds. For cold applications, thaw in the refrigerator for 1-2 hours.
Refreezing is safe but color darkens further.
Best Uses After Freezing
After freezing, pesto works perfectly for: pasta, pizza, sandwiches, soups, marinades, salad dressings.
Pesto ice cubes are one of the most useful things in a home cook's freezer. Drop a cube into pasta water, melt one into soup, spread on pizza dough, or mix into scrambled eggs. Each cube is roughly 2 tablespoons, which is one serving. Make a huge batch from summer basil and freeze enough to last until next summer.
Frequently Asked Questions
Basil oxidizes when exposed to air, causing browning. A thin layer of olive oil on top of each cube creates a barrier. The pesto is still perfectly safe and flavorful even if it darkens.
Frozen pesto lasts 3-6 months at peak quality. After 6 months, the flavor becomes muted but it is still safe. For best results, use within 3 months.
Yes, but leave headspace for expansion and top with olive oil. Glass jars must be freezer-safe. Ice cube trays are more practical because you can grab exactly what you need.
The Bottom Line
Freezing pesto is a great way to extend its shelf life. Frozen pesto retains excellent flavor. The color may darken slightly (the basil oxidizes) but the taste remains vibrant.