1/2 cup vanilla yogurt
2 tablespoons butter, melted
2 tablespoons vegetable oil
1 egg
1 1/3 cups all-purpose flour
3/4 cup brown sugar
1/2 teaspoon baking soda
1/4 teaspoon salt
1 cup diced rhubarb

1/4 cup brown sugar
1/2 teaspoon ground cinnamon
1/4 teaspoon ground nutmeg
1/4 cup crushed sliced almonds
2 teaspoons melted butter