M&Ms Ice Cream Cookie Sandwiches

INGREDIENTS

2 cups

(16 ounces, 480ml) heavy cream

14 oz

(1 can; 396g) sweetened condensed milk

1 tsp

vanilla extract

1 cup

mini or regular size M&M®'s

3/4 cup

unsalted butter, softened to room temperature

1 cup

packed light brown sugar

1/2 cup

granulated sugar

large egg, at room temperature

large egg yolk, at room temperature

2 tsp

vanilla extract

2 cups

+ 2 Tablespoons (266g) all-purpose flour (measured correctly)

1 tsp

cornstarch

1/2 tsp

baking soda

1/2 tsp

salt

1 cup

mini or regular size M&M®'s