This version is kicked up another notch. It has white chocolate in the mix and it helped the texture become extra gooey and creamy. I love my white chocolate! I didn't have any Rice Krispies on hand, so I used Rice Chex and they turned out perfect. My boss has a daughter and grandson with Celiac disease and she uses Chex for her cereal treats, because it is Gluten free (now Rice Krispies makes a gluten free version too). Use whichever you prefer.
4 Tbl. unsalted butter
1/2 c. white chocolate chips
1 (10 oz.) bag mini marshmallows
6 1/2 c. Rice Chex or Rice Krispies
1 cup M&M's, or more to taste
Add butter and white chocolate chips to a large saucepan. Stir until melted. Add the marshmallows and stir until just melted. Remove from heat and stir in 3 cups of cereal and stir to coat. Add remaining cereal and M&M's and fold together until everything is coated in melted marshmallows. If it is too sticky for your taste, add another 1/2 cup of cereal. Lightly press mixture into a well-greased 9x13-inch pan. Allow to set and cut into squares and serve.