Mountain crostini with smoked trout and apple cream

Horseradish, grated	2-inch piece
Apple, green, peeled, cored, chopped	1
Lemon, stained juice	½
Yogurt, plain, low fat	scant ½ cup
Cream, heavy	scant ½ cup
Baguette, sliced diagonally, buttered, toasted	1
Smoked trout	7 ounces
Salt
Pepper, freshly ground

1. Combine the horseradish and apple in a bowl, and sprinkle with the lemon juice. 
2. Stir in the yogurt, and then the cream; season with salt and pepper to taste. 
3. Spread mixture on slices of bread, top with smoked trout, and serve. 

Recipe adapted from The Silver Spoon.