In a bowl, combine the first six ingredients. In another bowl, whisk the eggs, buttermilk and oil. Add to the dry ingredients and stir just until moistened. Stir in jalapenos. Pour into a greased 9-inch square baking pan.

Bake at 400˚F for 20-22 minutes or until a toothpick inserted near the center comes out clean. Cut into squares or wedges.
Serve warm.