diff --git a/.emacs.d/functions.el b/.emacs.d/functions.el
index 55b3a26..86392d6 100644
--- a/.emacs.d/functions.el
+++ b/.emacs.d/functions.el
@@ -10,3 +10,8 @@
   (get-buffer-create "*Writing Mode*")
   (switch-to-buffer "*Writing Mode*") 
   (org-mode))
+
+(setq-default
+  functions-file (concat (or (getenv "XDG_CONFIG_HOME") "~/.emacs.d/") "kustomize.el"))
+(when (file-exists-p functions-file)
+  (load functions-file))
diff --git a/.emacs.d/kustomize.el b/.emacs.d/kustomize.el
new file mode 100644
index 0000000..1afbcca
--- /dev/null
+++ b/.emacs.d/kustomize.el
@@ -0,0 +1,25 @@
+;;; kustomize.el --- quickly test and render kustomize overlays
+;; Copyright (C) 2023 Gabriel Simmer
+
+;; Author: Gabriel Simmer <gsimmer@protonmail.com>
+;; Version: 0.0.100m
+
+;;; Commentary:
+
+;; Render a Kustomization and display in a buffer.
+
+;;; Code:
+(defun render-kustomize (path)
+  (shell-command-to-string (concat "kubectl kustomize" " " path)))
+
+(defun kustomize (&optional path) (interactive)
+	   (or path (setq path ""))
+	   (let ((buff (get-buffer-create "*kustomize*")))
+		 (display-buffer buff
+						 '(display-buffer-in-side-window . ((side . right))))
+		 (with-current-buffer buff
+		   (insert (format "%s" (render-kustomize path)))
+		   (if (fboundp 'k8s-mode) (k8s-mode) (yaml-mode)))))
+
+(provide 'kustomize)
+;;; kustomize.el ends here