Stir together all the ingredients in a small saucepan. Cook over medium-high heat while stirring frequently until all of the sugar is dissolved, and bring to a boil.
1/4 cup (57g) salted butter, 1 cup (220g) brown sugar, 1/2 cup (120ml) heavy cream, 1/2 tsp salt
Reduce the heat to low and let simmer for 5 minutes. Do not stir.
Remove from stovetop and pour into a heatproof jar. Let cool.
Banana Bread
Meanwhile, preheat the oven to 350F and grease a 9x5" loaf pan.
Using an electric mixer, cream together the butter and sugar in a large bowl. Mix in the eggs, milk and vanilla.
1/2 cup (114g) unsalted butter, 3/4 cup (150g) granulated sugar, 2 large eggs, 1/4 cup (60ml) milk, 1 tsp vanilla extract
Stir in the flour, baking powder and baking soda until almost combined. Fold in the bananas and 1/2 cup caramel until just combined.
Spoon into prepared loaf pan and bake for 55-60 minutes or until a toothpick inserted into the center comes out clean.
Let cool and drizzle with more caramel sauce before serving.
Notes
The banana bread can be stored wrapped up or in an airtight container at room temperature for 3-4 days.
Leftover caramel sauce should be refrigerated. It can be reheated in the microwave for 15-30 seconds to warm up.