In a heavy bottomed saucepan, bring milk, water, butter and salt to a boil. Lower to a slow simmer, and slowly whisk in cornmeal and semolina (stirring constantly). Continue to stir with a wooden spoon until polenta comes away from side of pan (about 10 minutes). Next, stir in the oven-dried tomatoes and pour polenta into a 9 by 13 buttered baking dish and let cool at room temperature. Slice polenta or cut with a circular cutter, any size. Heat olive oil in a non stick pan over medium heat and lightly brown polenta on both sides. Place 2 pieces on a plate and garnish with fennel salad.