+20 Carbs In Stuffed Mushrooms At Olive Garden References. Combine clams, onions, garlic salt, minced garlic, butter and oregano in a bowl and mix well. Comprehensive nutrition resource for olive garden stuffed mushrooms.

Most of those calories come from fat (71%). There are 380 calories in 6 mushrooms of olive garden stuffed mushrooms. There are 370 calories in a 1 serving serving of olive garden seafood stuffed mushrooms.

