1 large egg
1 medium apple, peeled, cored, and cut into 1/4-inch chunks
1 ripe pear, peeled, cored, and cut into 1/4-inch chunks
1 tsp. vanilla
1-1/2 cups all-purpose flour
1-1/2 tsp. baking powder
1-1/2 tsp. ground cardamom
1/2 tsp. cinnamon
1/4 tsp. salt
3/4 cup granulated sugar
3/4 cup plain yogurt
6 Tbsp. butter (3/4 stick) room temperature