These Jumbo Banana Muffins are baked in a popover pan for a tall, bakery-style shape and finished with a spooned-on caramel icing. They're soft, lightly slweet, and well suited for sharing, gifting, or enjoying with coffee.
Preheat oven to 350℉. Spray a popover pan with cooking spray and set aside.
In a large mixing bowl, cream shortening and sugar until fluffy. Mix in the eggs, mashed bananas, and vanilla until well combined.
In a medium sized bowl, combine flour, baking soda, and salt. Stir into wet ingredients until just moistened.
Stir in chopped walnuts. (if using)
Using a large cookie scoop, scoop batter into prepared popover pan. that has been coated with cooking spray until ⅔ full. (this will be approximately 2 full cookie scoops)
Bake at 350 for 28 minutes or until toothpick comes out clean when inserted. Cool on baking rack for 10 minutes, then remove from pan and finish cooling.
Make the glaze by simmering butter and brown sugar in a saucepan, stir in half and half, and whisk in confectioners' sugar until smooth. Spoon over slightly cooled muffins.