In a medium saucepan over low-medium heat, sauté minced garlic with olive oil for one minute. Be careful not to burn the garlic.
Add gluten-free all-purpose flour to the saucepan and whisk for about 1 minute until the flour is all absorbed and the mixture starts to form a loose paste.
Add the dairy-free milk, dairy-free Parmesan, nutritional yeast, salt and pepper into the saucepan over low-medium heat and whisk constantly until the mixture comes to a light simmer.
Let the mixture continue to simmer, still whisking constantly, for 2 to 3 minutes until the sauce thickens a bit.
Remove saucepan from heat and let sit for about 5 minutes before serving. The sauce will continue to thicken as it rests. Serve hot.
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Notes
Allow the leftovers to cool to room temperature then store leftovers in a sealed food-safe container in the fridge for up to 3 days.
This Alfredo sauce doesn’t freeze well. The oil based ingredients and the dairy-free milk ingredients start to separate from each other once frozen.