- Preheat oven to 350°. 
- Prepare a 2.5 quart casserole pan (8x3) or muffin tin with a baking spray or butter. 
- Mix flour with sugar, baking powder salt, and baking soda in a large bowl. Cut in cold butter with a pastry cutter or two knives until it resembles coarse crumbs. 
- In a small bowl, beat the eggs and remove a tablespoon to brush on top of the muffins or the large bread before baking if you want them shiny. I have made it both ways with or without egg on top of great results. 
- Add buttermilk and eggs to the flour mixture, the dough will be very sticky. 
- You can mix it with a mixer and dough hook if you prefer or with a wooden spoon in a bowl. 
- Add raisins and mix together until they are incorporated. 
- Turn the dough onto a well-floured surface and with floured hands knead the dough about 10 times. 
- Place the dough formed into a ball into the prepared dish, and slice an x into the dough. 
- You can bake this in a 1 1/2 quart casserole dish at 350° for 1 hour and 10 minutes. 
- Or you can bake these as muffins, place three tablespoons into each well of the muffin pan and bake at 350 degrees for 15-20 minutes. 
- Insert a toothpick to check to see the bread is not moist inside. 
- Let the Irish soda bread cool and dust with powdered sugar before serving. 
- * You can find dry buttermilk, that you can add water to in the baking section. Buttermilk adds a rich flavor to scones, biscuits, cakes, and pancakes.