Description

This Savory Polenta Mushroom Canapé recipe creates an impressive appetizer featuring creamy, firm polenta slices topped with a flavorful mushroom ragout and sweet caramelized onions. Perfect for entertaining guests, the dish combines the rich earthiness of mixed mushrooms sautéed with herbs and balsamic vinegar, balanced by the natural sweetness of slow-cooked onions and the smooth comfort of buttery polenta.

Ingredients

Scale

Polenta Base

6 cups water (or stock, for added flavor)
Pinch of salt
2 cups yellow cornmeal
2-3 tbsp butter
Grated Parmesan cheese (optional)

Mushroom Ragout

2 cups sliced mushrooms (shiitake, white button, baby bella mix)
1 tbsp olive oil
½ cup chopped onion
2 cloves garlic, minced
1 tbsp balsamic vinegar
1 tsp fresh rosemary
1 tbsp fresh parsley
Salt & pepper, to taste

Caramelized Onions

2 medium onions, thinly sliced
1-2 tbsp olive oil
1 tbsp balsamic vinegar
2 tsp agave nectar (or 1 tbsp sugar)
Salt & pepper, to taste

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Instructions

Prepare Polenta: Bring 6 cups of water or stock to a boil in a large pot, adding a pinch of salt if using water. Slowly whisk in 2 cups of yellow cornmeal into the boiling liquid continuously to avoid lumps.
Cook Polenta: Reduce heat to a simmer once thickened and cook for 15-20 minutes, stirring frequently until the polenta becomes creamy and smooth.
Finish Polenta: Stir in 2-3 tablespoons of butter and grated Parmesan cheese until fully melted and incorporated, then spread the polenta into a dish and chill until firm.
Shape and Cook Polenta Slices: Once firm, cut the polenta into desired shapes, then grill, broil, or fry the slices until golden brown and slightly crisp on the edges.
Sauté Mushroom Ragout Base: Heat 1 tablespoon of olive oil in a skillet and sauté ½ cup chopped onion until translucent and soft.
Cook Mushrooms: Add the sliced shiitake mushrooms and cook until they start to brown. Then add the minced garlic and remaining mushrooms (white button and baby bella), cooking until all mushrooms are evenly browned.
Season Mushroom Ragout: Stir in 1 tablespoon balsamic vinegar, 1 teaspoon fresh rosemary, and 1 tablespoon fresh parsley. Season with salt and pepper to taste, then remove from heat.
Caramelize Onions: Heat 1 to 2 tablespoons of olive oil in a pan, add the thinly sliced onions, and cook on low-medium heat for 20-30 minutes until golden brown and deeply caramelized.
Add Flavor to Onions: Stir in 1 tablespoon balsamic vinegar and 2 teaspoons agave nectar (or 1 tablespoon sugar) to the caramelized onions, seasoning with salt and pepper to balance sweetness and acidity.
Assemble Canapés: Spoon the mushroom ragout generously over the golden polenta slices, then top with a portion of the caramelized onions to create layered, flavorful canapés ready to serve.

Notes

Using stock instead of water for cooking polenta adds extra depth of flavor.
Grated Parmesan cheese is optional but enhances umami in the polenta.
You can grill, broil, or pan-fry polenta slices depending on equipment availability.
Slow caramelization of onions is crucial to develop rich sweetness—do not rush the process with high heat.
This recipe serves well as an elegant appetizer for parties or special occasions.
Vegetarian-friendly but not vegan due to butter and Parmesan cheese.