Steep minced garlic in oil for at least an hour and up to 6 hours or so.

Meanwhile, Mix the mayonaise, basil, lemon, mustard, and salt and cayenne pepper in a small bowl. Cover and chill.

Fire up the grill. Brush portobello caps and whole wheat buns with garlic oil. Brill portobello caps, about 4 minutes on each side. Grill buns until toasted. Serve mushrooms on buns with the basil mustard sauce; put fresh basil leaves on the sandwich if you want to ...

Very good, very popular!

Serves: 4

Preparation time: 30 min

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