Step 1: Begin by washing and peeling the white potatoes. Slice them thinly, about 1/8 inch thick, using a sharp knife or a mandoline for consistent thickness.
Step 2: Turn your Instant Pot to the sauté mode. Add the butter and allow it to melt. Once melted, add the minced garlic and sauté for 1-2 minutes until fragrant.
Step 3: Press the “Cancel” button to stop the sautéing process. Layer the sliced potatoes in the Instant Pot, sprinkling the fresh thyme on top.
Step 4: Pour the vegetable stock evenly over the potatoes, then pour the heavy cream on top. Gently mix to ensure the potatoes are submerged.
Step 5: Secure the lid on the Instant Pot and set the valve to sealing. Select the manual or pressure cook setting and set the timer for 10 minutes.
Step 6: Once cooking is complete, let the steam release naturally for about 5 minutes before manually releasing any remaining steam. Carefully open the lid and stir the potatoes.
Step 7: Add the grated cheddar cheese on top, close the lid again for a few minutes to allow the cheese to melt, then stir everything together.
Step 8: Serve warm, garnished with additional thyme if desired.
Notes
For extra flavor, consider using a mix of cheeses or adding a pinch of red pepper flakes for heat.