Portobellos Stuffed With Caramelized Onions and Manchego

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These mushrooms look similar mini-pizzas. They marque a large dinner-party archetypal people or, served with a greenish salad, a luncheon main course. For a cocktail party, marque them with tiny caps.

Prep the bulb stuffing and food topping up to 2 days successful advance. The mushrooms are champion baked to order, but they tin beryllium assembled and refrigerated, covered, respective hours successful advance. Bring them to country somesthesia earlier baking.

From Real Entertaining columnist David Hagedorn.

Ingredients

measuring cup

Servings: 4-24 Makes 4 first-course servings (or 24 hors d'oeuvres utilizing smaller mushrooms)

For the mushrooms

4 ample (4 1/2-inch diameter) portobello mushrooms, oregon 24 tiny "baby bellas" (2 1/2-inch diameter), cleaned, gills and stems removed
2 tablespoons olive oil
2 mean (1 1/2 pounds) yellowish onions, chopped successful half, past into 1/4-inch slices
Salt
Freshly crushed achromatic pepper
Leaves from 1/2 tiny clump of thyme (2 tablespoons)
1/2 spoon ail powder

For the topping

2 ounces Manchego cheese, finely grated (2/3 cup)
1/4 cupful regular oregon low-fat mayonnaise (do not usage nonfat)

Nutritional Facts

Per mushroom cap

Calories
260
Fat
17 g
Saturated Fat
5 g
Carbohydrates
23 g
Sodium
300 mg
Cholesterol
15 mg
Protein
7 g
Fiber
4 g
Sugar
10 g

This investigation is an estimation based connected disposable ingredients and this preparation. It should not substitute for a dietitian’s oregon nutritionist’s advice.

From Real Entertaining columnist David Hagedorn.

Tested by David Hagedorn.

Published August 31, 2010

Updated March 13, 2026