Rice Krispies

I know I posted a recipe for the rice krispies before but I made them again and I tweaked the recipe and now they taste even better than before!! I checked some of the stores again in Canada and Pricesmart and Superstore sell the boxes of cereal!!! Superstore is about $1 cheaper than Pricesmart. :)
Ingredients:
3 Tbsp margarine or butter
5 cups miniature marshmallows
4 1/2 - 5 cups Kelloggs Rice Krispies Gluten Free Cereal

Directions:
1.Melt margarine or butter in a large bowl that fits in the microwave
Add marshmallows. Put in microwave for 2 1/2 minutes.
2. Add Vanilla to the marshmallows.
3. Add Rice Krispies. Stir until well coated.
4. Put mix in a 9x13 glass pan, spread out until even throughout pan.