Apple-Walnut-Poppy Seed Coffee Cake
["1/2 c. vegetable oil", "1 c. sugar", "2 eggs", "1 tsp. vanilla", "2 c. all-purpose flour", "1 tsp. baking powder", "1 tsp. baking soda", "1/4 tsp. salt", "3 Tbsp. poppy seed", "1 c. dairy sour cream", "2 c. finely chopped apples", "1 c. chopped nuts", "3/4 c. brown sugar", "1 tsp. ground cinnamon", "4 Tbsp. melted butter"]
["Preheat oven to 350\u00b0.", "Grease and flour a 13 x 9 x 2-inch baking pan.", "Mix together the oil and sugar. Beat in eggs and vanilla. Set aside."]
["vegetable oil", "sugar", "eggs", "vanilla", "flour", "baking powder", "baking soda", "salt", "poppy seed", "sour cream", "apples", "nuts", "brown sugar", "ground cinnamon", "butter"]