Grease a 13x9 baking pan and spread pecans and maple syrup evenly over the bottom.
Combine 2 cups flour, sugar, yeast and salt in large bowl. Stir in water, 2 Tbsp butter and egg. Beat until smooth; gradually stir in remaining flour until soft dough forms. Place in greased bowl and cover with greased plastic wrap to prevent sticking; let rise until doubled, about 30 minute.
On lightly floured surface, roll dough to 15x12 rectangle. Spread with remaining butter. Mix brown sugar with cinnamon; sprinkle over surface. Starting with a short side, roll up tightly.
Cut into 12 slices; place cut side down in prepared pan. Cover with greased plastic wrap; place on wire rack set over stove while oven preheats to 375*F. Let rise until buns double, 30-45 minutes. Uncover buns and bake until golden brown, 25-30 minutes. Cool for 1 minute. Loosen edges; invert onto serving plate, serve warm.
For cinnamon rolls, omit syrup and pecans; glaze with a mixture of 1 1/2 c powdered sugar, 2-3 Tbsp milk and 1 tsp vanilla.