Melt butter over medium-low in medium saute pan.
Add onions, season with sugar, salt and pepper and stir to coat.
Continue cooking, stirring frequently, until onions are softened and golden (about 15-20 minutes). Remove from heat and set aside.
Preheat oven to 350 degrees.
Slice bread on a diagonal into 1" pieces. Lay flat on baking sheet.
Drizzle with olive oil and bake 7-10 minutes, until lightly toasted. Remove from oven.
Spread about 1 tbsp of cream cheese onto each bread slice and then top with 1 tbsp or so of pumpkin butter.
Top with caramelized onions and a sprinkle of fresh sage.
Serve room temperature.