Microwave potatoes and onions in a large microwaveable bowl on high for 4-5 minutes, or until potatoes are softened.

Cool slightly.

Combine flour and baking powder in a separate bowl.

Add the flour mixture to the potatoes and onions, along with the eggs and dressing.

Mix well to combine.

Heat oil in a large nonstick skillet on medium-high heat.

Working in batches, spoon about 1 tablespoon of potato mixture into the skillet.

Flatten each latke with the back of a spatula.

Cook on medium heat for 1 1/2 to 2 minutes on each side, or until golden brown.

Drain on paper towels to remove excess oil.

Serve latkes topped with smoked salmon.