Kid approved! All the flavors you love from a delicious bakery cinnamon roll warm from the oven, complete with pecans. We had to force our toddler to come up for air when we let him have a taste that turned into a little more than that.
Place everything except the chopped pecans in a blender and blend on high for about a minute. Make sure the milk and yogurt are very cold to start.
You can serve at this point, but this one really benefits from some meld time for the cinnamon and for the sweetener to completely dissolve, as erythritol and erythritol-based blends (like Swerve Brown) are a little reluctant to dissolve readily in cold environments. See the Recipe Notes for a little more about this.
As I stated above, erythritol and erythritol-based sweetener blends are often reluctant to dissolve readily in cold liquids. One strategy is to blend, wait for a bit, and then re-blend to allow some time for it to dissolve. This recipe lends itself to this approach because it allows the cinnamon flavor to extract a bit more and permeate the beverage.
Another method is to run the sweetener through a spice grinder or food processor to pulverize it into dust. This maximizes the surface area and accelerates the dissolving process. Using something like Swerve Confectioners would accomplish the same thing.