diff --git a/src/main/java/com/github/nylle/javafixture/instantiation/BuilderInstantiator.java b/src/main/java/com/github/nylle/javafixture/instantiation/BuilderInstantiator.java
index 111142b..c1f811a 100644
--- a/src/main/java/com/github/nylle/javafixture/instantiation/BuilderInstantiator.java
+++ b/src/main/java/com/github/nylle/javafixture/instantiation/BuilderInstantiator.java
@@ -8,8 +8,11 @@
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 import java.lang.reflect.Modifier;
+import java.util.HashMap;
 import java.util.List;
+import java.util.Map;
 import java.util.Optional;
+import java.util.function.BiFunction;
 import java.util.stream.Stream;
 
 import static java.util.stream.Collectors.toList;
@@ -30,6 +33,13 @@ public static <T> BuilderInstantiator<T> create(Method builderMethodCandidate, S
                 .orElse(null);
     }
 
+    private Map<BiFunction, Object> presetValues = new HashMap<>();
+
+    public <U,V> BuilderInstantiator<T> with(BiFunction<U,V,U> setter, V value) {
+        presetValues.put(setter, value);
+        return this;
+    }
+
     public T invoke(SpecimenFactory specimenFactory, CustomizationContext customizationContext) {
         try {
             var builder = builderMethod.invoke(null, new Object[]{});
@@ -41,6 +51,8 @@ public T invoke(SpecimenFactory specimenFactory, CustomizationContext customizat
                                 .create(customizationContext, new Annotation[0])
                 });
             }
+            // since we are using lambdas, the method name is not available here anymore
+            presetValues.entrySet().forEach(e -> e.getKey().apply(builder, e.getValue()));
 
             return (T) buildMethod.invoke(builder, new Object[]{});
         } catch (InvocationTargetException | IllegalAccessException ex) {
diff --git a/src/test/java/com/github/nylle/javafixture/instantiation/BuilderInstantiatorTest.java b/src/test/java/com/github/nylle/javafixture/instantiation/BuilderInstantiatorTest.java
index 5472fa3..d87d822 100644
--- a/src/test/java/com/github/nylle/javafixture/instantiation/BuilderInstantiatorTest.java
+++ b/src/test/java/com/github/nylle/javafixture/instantiation/BuilderInstantiatorTest.java
@@ -26,4 +26,23 @@ void invokeReturnsBuiltObjectWithAllMethodsCalled() throws NoSuchMethodException
         assertThat(actual.getString()).isNotNull();
     }
 
+    @Test
+    void builderCanBeCnfigured() throws NoSuchMethodException {
+        var sut = BuilderInstantiator.create(ClassWithBuilder.class.getMethod("builder"), SpecimenType.fromClass(ClassWithBuilder.class));
+
+        // we seem to need to explicitly cast it like this.
+        var result = sut
+                .with(ClassWithBuilder.Builder::number, 2)
+                .with(ClassWithBuilder.Builder::string, null) // we have lambdas, i.e. no method names, so no without
+                .invoke(new SpecimenFactory(new Context(new Configuration())), CustomizationContext.noContext());
+
+        assertThat(result).isInstanceOf(ClassWithBuilder.class);
+
+
+        var actual = (ClassWithBuilder) result;
+
+        assertThat(actual.getNumber()).isEqualTo(2);
+        assertThat(actual.getString()).isNull();
+    }
+
 }