Open the re-sealable and add garlic, olive oil, salt and pepper.
Place sealed bag on microwaveable plate and microwave for 8 minutes on high.
Using potholders, carefully remove plate from microwave. Let rest for 1 minute. Carefully open the seal with a fork. Place in serving bowl to mash.
Add ¾ - 1 cup milk for desired consistency then and the butter. Using a potato masher gently mash all the ingredients in serving bowl to mash. Adjust the seasoning with salt and pepper, serve.