Banana Split Poke Cake

Name: Banana Split Poke Cake
Prep time: 1 h
Cook time: 1 h
Total time: 2 h
Cuisine: American
Ingredients: 2 cups heavy cream; 1 cup packed light brown sugar; 1/4 cup light corn syrup; 1/2 teaspoon kosher salt; 10 ounces 72% dark chocolate chips (about 1 3/4 cups); 2 sticks (8 ounces) unsalted butter; 2 teaspoons vanilla extract; 1 1/2 sticks (12 tablespoons) unsalted butter; Cooking spray; 4 very ripe medium bananas; 1 1/4 cups buttermilk; 1 tablespoon vanilla extract; 3 cups all-purpose flour; 1 teaspoon baking powder; 1/2 teaspoon baking soda; 2 1/4 cups granulated sugar; 3 large eggs; 1 large egg yolk; 1 (12-ounce) jar strawberry ice cream topping; 1 (12-ounce) jar pineapple ice cream topping; 12 to 16 maraschino cherries with stems; Whipped cream; Chopped nuts or Ice cream nut topping (optional)