Preheat oven to 350°. Bake pecans in a single layer in a shallow pan 6 to 8 minutes or until toasted, stirring halfway through. Cool 15 minutes. Reduce oven temperature to 325°.
Toss diced apples in 2 Tbsp. melted butter to coat in a medium bowl; add cranberries, next 2 ingredients, and toasted pecans, and toss until well blended.
Beat granulated sugar and 1 cup butter at medium speed with an electric mixer until light and fluffy. Add eggs, 1 at a time, beating just until blended after each addition. Add pumpkin and vanilla; beat just until blended.
Stir together 3 cups flour and next 3 ingredients. Gradually add flour mixture to butter mixture, beating at low speed just until blended after each addition. Spoon half of batter into a greased and floured 10-inch (12-cup) Bundt pan. Spoon apple mixture over batter, leaving a 1/2-inch border around outer edge. Spoon remaining batter over apple mixture.
Bake at 325° for 1 hour and 10 minutes to 1 hour and 20 minutes or until a long wooden pick inserted in center of cake comes out clean. Cool in pan on a wire rack 15 minutes. Remove from pan to wire rack; cool completely (about 2 hours).
Meanwhile, prepare Sugared Pecans and Pepitas.
Prepare Maple Glaze; immediately spoon onto cooled cake. Arrange pecans and pepitas on cake.