World's Best Rice Krispies® Treats
Ingredients:
-
cooking spray
-
½ cup unsalted butter
-
½ cup sweetened condensed milk
-
1 (10 ounce) package miniature marshmallows
-
1 cup miniature marshmallows
-
1 tablespoon vanilla extract
-
1 teaspoon fine sea salt
-
6 cups crispy rice cereal (such as Rice Krispies®)
-
1 pinch Sea Salt, gray