Step 1: Roast the Beets

1. Preheat your oven to 400°F (200°C). Line a baking sheet with aluminum foil.
2. Rub the beets with olive oil and season with salt and pepper. Wrap them individually in foil and place them on the prepared baking sheet.
3. Roast the beets for about 45-60 minutes, until they are tender when pierced with a fork. Let them cool, then peel and cut them into bite-sized cubes.

Step 2: Prepare the Goat Cheese Mixture

1. In a small bowl, mix the softened goat cheese with honey until creamy and well-combined.
2. Transfer the goat cheese mixture to a piping bag or a small resealable plastic bag with the corner snipped off.

Step 3: Toast the Walnuts

1. Place the chopped walnuts in a dry skillet over medium heat.
2. Toast for about 3-5 minutes, stirring frequently, until the nuts are fragrant and lightly browned. Set aside to cool.

Step 4: Make the Balsamic Reduction

1. In a small saucepan, combine the balsamic vinegar and brown sugar (if using).
2. Bring the mixture to a simmer over medium heat, then reduce the heat to low. Cook, stirring occasionally, until the vinegar has thickened and reduced by half (about 10-15 minutes). It should coat the back of a spoon.

Step 5: Assemble the Bites

1. Take a cube of roasted beet and pipe a small dollop of the goat cheese mixture on top.
2. Sprinkle with toasted walnuts and fresh thyme leaves.
3. Drizzle the balsamic reduction over the assembled bites.
4. Insert a toothpick or skewer into each bite for easy serving.