diff --git a/internal/testutil/baseline/baseline.go b/internal/testutil/baseline/baseline.go
index fa28ce4979..2333b32544 100644
--- a/internal/testutil/baseline/baseline.go
+++ b/internal/testutil/baseline/baseline.go
@@ -146,12 +146,30 @@ func RunAgainstSubmodule(t *testing.T, fileName string, actual string, opts Opti
 	writeComparison(t, actual, local, reference, true)
 }
 
+var (
+	mkdirAllCache       sync.Map
+	mkdirAllCacheMarker any = new(int)
+)
+
+func mkdirAllCached(t *testing.T, path string) error {
+	if _, ok := mkdirAllCache.Load(path); ok {
+		return nil
+	}
+
+	if err := os.MkdirAll(path, 0o755); err != nil {
+		return err
+	}
+
+	mkdirAllCache.Store(path, mkdirAllCacheMarker)
+	return nil
+}
+
 func writeComparison(t *testing.T, actualContent string, local, reference string, comparingAgainstSubmodule bool) {
 	if actualContent == "" {
 		panic("the generated content was \"\". Return 'baseline.NoContent' if no baselining is required.")
 	}
 
-	if err := os.MkdirAll(filepath.Dir(local), 0o755); err != nil {
+	if err := mkdirAllCached(t, filepath.Dir(local)); err != nil {
 		t.Error(fmt.Errorf("failed to create directories for the local baseline file %s: %w", local, err))
 		return
 	}