Combine flour, sugar, baking powder, and salt in a large bowl; cut in peanut butter with a pastry blender (or 2 knives used scissor-style) until mixture resembles coarse meal. Make a well in center of mixture. Combine eggs and milk; add to dry ingredients, stirring just until moistened.
Spoon half of batter into greased muffin pans (or line with paper muffin cups), filling one-third full; top each muffin with 3/4 teaspoon strawberry preserves. Spoon remaining batter into muffin pans, filling two-thirds full. Bake at 400 degrees Fahrenheit for 15 to 17 minutes or until lightly browned. Remove from pans immediately.