AWSTemplateFormatVersion: '2010-09-09' Transform: AWS::Serverless-2016-10-31 Resources: MyLayerVersion: Type: AWS::Serverless::LayerVersion Properties: LayerName: MyLayerInChild ContentUri: ../PyLayer CompatibleRuntimes: - python3.8 Metadata: BuildMethod: python3.8 Outputs: LayerVersion: Value: !Ref MyLayerVersion Description: MyLayerVersion in child.yaml