diff --git a/fluent-kafka-streams-tests/src/main/java/com/bakdata/fluent_kafka_streams_tests/BaseOutput.java b/fluent-kafka-streams-tests/src/main/java/com/bakdata/fluent_kafka_streams_tests/BaseOutput.java
index 2f4c513..1d501fa 100644
--- a/fluent-kafka-streams-tests/src/main/java/com/bakdata/fluent_kafka_streams_tests/BaseOutput.java
+++ b/fluent-kafka-streams-tests/src/main/java/com/bakdata/fluent_kafka_streams_tests/BaseOutput.java
@@ -1,7 +1,7 @@
 /*
  * MIT License
  *
- * Copyright (c) 2019 bakdata GmbH
+ * Copyright (c) 2024 bakdata GmbH
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -24,6 +24,8 @@
 
 package com.bakdata.fluent_kafka_streams_tests;
 
+import java.util.List;
+import java.util.stream.Collectors;
 import org.apache.kafka.clients.producer.ProducerRecord;
 import org.apache.kafka.common.serialization.Serde;
 import org.apache.kafka.streams.TestOutputTopic;
@@ -114,6 +116,16 @@ public TestOutput<K, V> asStream() {
         return new StreamOutput<>(this.testDriver, this.topic, this.keySerde, this.valueSerde);
     }
 
+    @Override
+    public List<ProducerRecord<K, V>> toList() {
+        return this.testOutputTopic
+                .readRecordsToList()
+                .stream()
+                .map(testRecord -> new ProducerRecord<>(this.topic, 0, testRecord.timestamp(), testRecord.key(),
+                        testRecord.value(), testRecord.getHeaders()))
+                .collect(Collectors.toList());
+    }
+
     // ==================
     // Non-public methods
     // ==================
diff --git a/fluent-kafka-streams-tests/src/main/java/com/bakdata/fluent_kafka_streams_tests/TestOutput.java b/fluent-kafka-streams-tests/src/main/java/com/bakdata/fluent_kafka_streams_tests/TestOutput.java
index 22ae948..469e577 100644
--- a/fluent-kafka-streams-tests/src/main/java/com/bakdata/fluent_kafka_streams_tests/TestOutput.java
+++ b/fluent-kafka-streams-tests/src/main/java/com/bakdata/fluent_kafka_streams_tests/TestOutput.java
@@ -24,6 +24,7 @@
 
 package com.bakdata.fluent_kafka_streams_tests;
 
+import java.util.List;
 import org.apache.kafka.clients.producer.ProducerRecord;
 import org.apache.kafka.common.serialization.Serde;
 
@@ -147,5 +148,7 @@ default <VR> TestOutput<K, VR> withValueType(final Class<VR> valueType) {
      * @return Current output with {@link org.apache.kafka.streams.kstream.KStream} semantics
      */
     TestOutput<K, V> asStream();
+
+    List<ProducerRecord<K, V>> toList();
 }