Brown butter rice krispie treats are a take on a childhood favorite with added warmth from brown butter! Soft and gooey marshmallows and crunchy rice cereal make a delicious treat.
Place unsalted butter in a large deep pot over low heat. You can cut up the butter for faster melting.
¾ cups unsalted butter
Gently stir the butter. After about 5 minutes it will foam - this is a sign its getting closer to browning.
As soon as you see the golden hue turn brown with brown specks, remove the pot from the heat or it will burn.
Measure 2 cups of marshmallows and set aside (you will add them back in later). Add the rest of the marshmallows into the pot and stir with a wooden spoon or silicone spatula. Stir in the vanilla and salt.
2 10 oz bags mini marshmallows, 2 cups divided
After stirring for about a minute (it will look lumpy), place the pot back on low heat and continue to stir until the marshmallows are completely melted (no more lumps).
Add 5 cups of rice cereal to the pot - stir - then add the remaining 5 cups. Mix until the cereal is fully coated.
10 cups rice cereal
Gently mix in the remaining 2 cups of marshmallows just until incorporated, not melted.
Cover a 9x13-inch pan and cover with tinfoil and spray with cooking spray. If you do not use spray, they will stick to the tinfoil when you cut them. Pour the warm cereal mixture onto the pan.
Using a rubber spatula (so they don't stick) gently spread the cereal mixture into all 4 corners of the pan. Don't push down too hard or the treats will be dense and hard. Let the treats sit at room temperature for 1 hour or more.
After the treats have sat for 1 hour, use the overhanging foil to lift from the pan. Undo the foil from the sides. Eyeball or measure how many squares you'd like. For 15 squares, carefully use a sharp knife to cut 4 sections on the short side, then 2 sections on the long side. For 20 squares, cut 4 sections on the short side, then 3 sections on the long side.
Gently peel the squares from the tinfoil and eat!
Notes
Brown butter rice krispie treats can be stored in an airtight container for 5 days.
Freeze treats for up to 1 month in an airtight container with wax paper between the layers. Bring to room temperature before eating.