Place all ingredients in pan/baking sheet and stir to combine.
Place in oven at 170c for 40mins - until the vegetables have softened and start to char slightly at the edges.
Remove from oven, allow to cool and blend until smooth.
Store in an airtight container in the fridge for up to 2 weeks.
Notes
Essential Tools
cast iron pan/baking sheet/large frying pan
blender/food processor
measuring spoons/weighing scales
chopping board
sharp knife
Tips/Tricks
use good quality ingredients when making this sauce for maximum flavour. Donn't skimp on the oil or tomatoes
i find using a cast iron added a little better caramelization to the ingredients but if you don't own one then a baking sheet will work just fine
feel free to adjust the spice to your liking, 1 tsp of chili flakes adds a nice warm spice feeling without taking away from the tomatoes - in my opinion