The Foodie Dietitian Blog

Sweet Potato Polenta Bites with Thyme-Marinated Mushrooms

Perfect as a Thanksgiving or holiday appetizer, these sweet potato polenta bites are topped off with a deliciously savory thyme-infused mushroom marinade. Your guests won’t be able to keep their hands off them!

Perfect as a Thanksgiving or holiday appetizer, these sweet potato polenta bites are topped off with a deliciously savory thyme-infused mushroom marinade. Your guests won't be able to keep their hands off them! | @TheFoodieDietitian

I have polenta coming out of my ears right now.

Seriously, thank god I can freeze the stuff because WHOA. This is what happens when you set out with a recipe idea in mind and then you change your mind 5 times.

But the evolution of the recipe development was worth it because I’m in love with the final product.

Let me explain the thought process that led me to tupperware upon tupperware of sweet potato polenta.

First, I knew I wanted to make sweet potato polenta. It’s been on my recipe inspiration list for some time now. Actually, my Mom told me she had some when she tried her tempeh and butternut squash tacos. 2 for 2, Ma, way to go.

I figured I would just make creamy sweet potato polenta and call it a day. And to make it extra creamy, I thought I’ll add Greek yogurt. Well, the yogurt overpowered the sweet noteΒ from the sweet potato and made it look lighter and more yellow.

I shot it anyways. With this delicious spicy vegetarian chili I just adapted from a Whole Foods recipe. It looked beautiful. But it looked yellow. Not sweet-potato orange. It also in no way resembled the holidays in the least. Chili on Thanksgiving?Β Not happening.

So I started thinking how can I turn sweet potato polenta into something festive? Polenta bites! I made caprese polenta bites for a friend’s bachelorette party over the summer and everyone loved them!

Sweet Potato Polenta with Thyme-Marinated Mushrooms | @TheFoodieDietitian

So I made another batch of sweet potato polenta (this time sans Greek yogurt), cut it into small squares, and baked it! Oh, and topped it off with these deliciously savory and holiday-reminiscent thyme-marinated mushrooms.

Thanksgiving appetizer. Done.

Sweet Potato Polenta Bites with Thyme Mushrooms | @TheFoodieDietitian

Sweet Potato Polenta Bites with Thyme-Marinated Mushrooms

  • Yield: Makes 32 squares


For the sweet potato polenta:

  • 2 small to medium sweet potatoes
  • 2 cups water
  • 1/2 cup yellow corn meal
  • 1/2 tsp salt

For the thyme-marinated mushrooms:

  • 10oz cremini mushrooms, stems removed, and quartered
  • 2 1/2 tbsp olive oil
  • 3 cloves garlic, minced
  • salt and pepper, to taste
  • 1 tsp chopped thyme leaves
  • 1 1/2 tbsp lemon juice
  • 3/4 cup dry white wine


For the polenta:

  1. Preheat oven to 375 degrees. Pierce holes in sweet potatoes using a fork. Place potatoes on a baking sheet and bake for 45-60 minutes, or until fork-tender. Let cool.
  2. In the meantime, in a medium saucepan, bring 2 cups of water to a rapid boil. Add salt. While whisking, add corn meal to the water. Continue to whisk until polenta begins to thicken (about 1 minute).
  3. Cover and cook for 30 minutes, stirring every 10 minutes or so.
  4. Using a spoon, remove the flesh of the sweet potato and add to a food processor. Pulse until smooth texture.
  5. Once polenta is done cooking, remove from heat and stir in the sweet potato until combined.
  6. Pour polenta out onto a small baking sheet and use a spatula to spread out so that it’s evenly distributed (should come right up to edge of baking sheet). Refrigerate for about one hour or until set.
  7. Preheat oven to 400 degrees and line another baking sheet with parchment paper.
  8. Cut polenta into even squares (should make 32 squares) and transfer to the lined baking sheet.
  9. Bake polenta squares for 30 minutes, flipping them over halfway through.

For the mushrooms:

  1. In a medium saute pan, add olive oil over medium high heat. Add mushrooms and cook until they begin to caramelize (about 5 minutes).
  2. Add garlic and cook for a couple minutes, until fragrant. Add thyme and cook for another minute. Add lemon juice. Once lemon juice has evaporated, add the wine, turn down the heat, and let simmer until it cooks off (about 10 minutes).
  3. Top polenta squares with marinated mushrooms (about 2 mushroom quarters per square). Serve warm.

These were so delicious that Steve and I polished these off pretty quickly.

If you’re wondering where to find us over the next couple weeks, we’ll be eating polenta from now through eternity. I kinda don’t hate it though.

Sweet Potato Polenta Bites with Thyme Mushrooms | @TheFoodieDietitian

Have you ever set out to make a recipe with a specific intention in mind only to change your mind over and over? Was your freezer full afterwards too? πŸ™‚

Need more sweet potato inspiration? See below for more mouth-watering recipes:

Vegan Loaded Sweet Potato Nachos

Vegan Loaded Sweet Potato Nachos

Sweet Potato Hummus Soup

Sweet Potato Hummus Soup

Vegan Loaded Sweet Potato Skins

Vegan Loaded Sweet Potato Skins

I’m a nutrition coach and yoga teacher helping people to learn to love food again. I love cooking, taking pictures of my food and traveling around the world. Follow my blog for delicious, seasonal vegetarian recipes and simple strategies to bring more yoga and mindfulness into your life. And check out my e-book to learn how to improve your health through nutrition and yoga. Show me what deliciousness you make! Tag me @karalydonRD on Instagram.


  1. This look absolutely delicious!

  2. These look SO good! Cannot wait to add them to my menu!!

  3. Yum! This looks like an amazing Thanksgiving appetizer!

  4. Ok, wow! These look perfect! I want to make these for an app for Thanksgiving. If I were to make them ahead of time, at which step should I freeze them? Thanks for the great idea!

    • Thanks, Rachel! I would freeze them after you cut the polenta into squares. That’s what I did! Let me know how they turn out if you make them. Hope you and your friends and fam enjoy! Happy Thanksgiving πŸ™‚

  5. Such a beautiful appetizer!

  6. Sweet potato polenta- What a great idea! The flavors in this recipe look fantastic. They would pair so nicely with other Thanksgiving dishes. Definitely pinning to make.

  7. these are such a great idea for a tasty appetizer! pinned πŸ™‚

  8. YUM – I love polenta but don’t make it that often – big mistake. I’d eat these happily for dinner πŸ™‚

  9. What a perfect Thanksgiving appetizer!! I would’ve gladly taken some from you πŸ™‚ Going up on my round-up tomorrow!!

  10. Pinning this deliciously simple app! Polenta is a top 10 food for me πŸ™‚

  11. The sweet potato polenta alone sounds so yummy and then you added that amazing topping- wow!

  12. Sweet potato polenta! That’s genius!

  13. ohhhhh yummmm! I have never been a huge polenta fan, but crispy polenta squares I can get down with, especially when sweet potato is in the mix. These actually seem simple enough to make too! Too bad I didn’t know about this recipe before I posted my sweet potato recipe roundup πŸ˜‰

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